(March 13, 2005 the Ministry of information industry order 36th release from April 20, 2005) first in order to improve the quality of telecommunications services, maintenance of telecommunications users ' legitimate rights, ensure the systematization and standardization of telecommunications services and supervision, according to the People's Republic of China Telecommunications Ordinance, development of this specification. Second standard as applied in People's Republic of China territory the legitimate operation of the telecommunications business activities of telecom operators providing telecommunications services. III standard for telecom operators providing telecommunication services should meet the basic quality requirements, is the telecom industry's minimum commitment for public, apply to both a single telecommunications service network or multiple telecommunications network to provide telecommunications services. Telecommunication business operators providing telecommunication services, shall comply with the provisions of this standard quality of service indicators and indicators of quality. Quality of service indicators mentioned in this specification refers to reflect the degree of inherent characteristics fulfils requirements of telecommunication services, mainly reflect the non-technology factors of a set of parameters. Indicators of quality of communication referred to in this specification refers to reflect accuracy, efficacy and safety of communications, mainly reflecting technical factors of a set of parameters. Fourth People's Republic of China Ministry of information industry (hereinafter referred to as the Ministry of information industry) organizations to develop the country's telecommunication service specification, implementation of telecommunication service specification of supervision and inspection in the country. All provinces, autonomous regions and municipalities directly under the Communications Authority (hereinafter referred to as OFCOM) supervision and inspection of telecommunication service specification for implementation within their respective administrative areas. In this specification, the Ministry of information industry and collectively referred to as the communications authority telecommunications regulatory agency. Fifth telecommunications business operators can develop the corporate service standards, telecommunications business operators develop business services may not be lower than the norm. Sixth telecommunications business operator shall take effective measures to continue to improve telecommunication services. Article seventh telecommunications business operators should establish and improve the service quality management system, and in accordance with the regulations of the time, content and report to the telecommunications regulatory bodies and inform the enterprise quality of service to the community. Major communications while blocking, telecommunication business operators shall, according to prescribed requirements and time frame report to the telecommunications regulators. During the process of treatment, telecommunication business operators all of accident-related data collection, recording and storage, data and written records kept for at least six months. Article eighth telecom operators providing telecommunications services, should publish their type of business, service time, rates and service areas and other content, and reported to the local traffic authority record. Telecommunication business operators and repair lines, equipment, cutover, relocation, engineering networks and software upgrades and other foreseeable reason affecting or likely to affect users, users should be involved in the 72 hours before the announcement. Affected users for more than 24 hours or effect users with special needs, should also report to the local traffic authority. Telecommunications business operator may cease to operate a certain business, shall notify the users involved 30th in advance, and do a proper user aftermath. Nineth telecommunications business operators shall implement the relevant provisions of the national telecom management, clearly, and to take effective measures to provide convenience for the user fees and the query cost. Article tenth when users apply for telecommunications service, telecommunications business operator shall provide the user with the operation description. The description should include the business of business functions and understanding scope, business cancellation, fee charging methods, when to pay, obstacles call for disclosure, advisory services telephone number. Telecom business information should be tailored to the business process, easy to understand, true and accurate. When you pause or stop the service to users, and should be done in 24 hours before notifying the user. 11th telecommunications business operators shall not in any way restrict access to specified business or purchase of specified telecommunications terminal equipment. When users open, alter or terminate telecommunications services, telecommunications business operators must not delay and prevarication and without good reason refuses, not coercion, made things difficult for users. To operate local telephone services and mobile telecommunications business operator, phone number users should build an open, fair selection mechanism. 12th telecommunications business operators shall be in written form or other forms of clear rights and obligations of both operators and users, and its standard contract terms should be fair and reasonable, accurate, comprehensive, clear and simple. 13th telecommunication business operators should be rationally set up service outlets or agencies, arrange services or accept business in several ways, and user-friendly. On-site service shall comply with appointments, show proof of work or wear the company logo, distribution personnel should take the initiative to express Telecom Agent identity, protect user facilities, keeping the environment clean and tidy. Telecommunication business operators should provide persons with disabilities and older users with limited mobility to provide convenient services. Article 14th telecommunications business operators should establish channels of communication with the user and the system, listen to user comments and suggestions, and consciously to improve services. Telecommunications business operator shall provide the user with business consulting, querying, and obstacles to disclosure services such as accepting and taking forms such as published telephone to receive consumer complaints. For user complaints about telecommunications services, telecommunications business operator should reply in the 15th after receiving consumer complaints of users. Telecommunications business operator in respect of telecommunications services of dispute with the user, prior to the dispute, shall keep the original information. 15th telecommunication business operators provide telecommunication card business, shall provide the user with the corresponding service shall not be issued beyond the capacity of services of telecommunication card. Telecommunications business operators should take appropriate way of telecommunication business operators and card users rights, obligations and liability of the parties, tell the user to use methods, fees, billing, term of validity, and shall inform the user of the other matters. Telecommunication business operators shall not make the card user is unfair and unreasonable provisions shall not waive unilaterally or limitation of liability for telecommunications business operator, damage the lawful rights and interests of the user. 16th in proxy forms of telecommunications services, an agent in the provision of telecommunications services activities shall conform to this specification. Telecommunication business operators shall strengthen the management of its business agent, and check the agent is responsible for the management and supervision of the telecommunications business unit or individual quality of service. Article 17th communications authority in accordance with local conditions, local adjustments to the standard service quality index or supplement. Index adjustment under this specification, shall be approved by the Ministry of information industry. Ofcom in accordance with the provisions of the preceding paragraph to adjust quality of service indicators, which shall implement the adjusted indicator of the quality of the administrative area. 18th special needs of telecom operators based on user, contract-related business reception, opening time, handling issues such as time limits, but the quality of the services shall not be less than the norm or local communications service quality indicators established by the authority. Article 19th telecommunication services telecommunication business operators fail to meet this standard or local communications service quality indicators established by the authority, by the Telecoms Regulator ordered corrective action. It refuses, warning and a fine of less than 10,000 yuan and 30,000 yuan. Article 20th according to the actual situation of the Ministry of information industry, the telecom business project and its quality of service indicators and indicators of quality (see appendix) to make adjustments, and the promulgation and implementation. 21st article of the regulations come into force on April 20, 2005, published by the Ministry of information industry, telecommunication service standards (for trial implementation) ([2000]27) repealed simultaneously. Appendix: 1. telecommunications service specification-the-the fixed network local and the domestic calls Business 2. telecommunications service specification-the-the digital cellular mobile communications business 3. telecommunications service specification-the-the Internet and the other data communication business 4. telecommunications service specification-the-the domestic IP phone business 5. telecommunications service specification-the-the wireless paging business 6. telecommunications service specification-the-the information service business 7. telecommunications service specification-the-the domestic is small Terminal Earth station (VSAT) communications business 8. telecommunications service specification-the-the domestic communications facilities service business Appendix 1: telecommunications service specification-the-the fixed network local and the domestic calls business 1.1 fixed network local and the domestic calls business of service quality index 1.1.1 telecommunications business operators should free to user provides fire, and bandits police, and medical emergency, and traffic accident alarm, public phone of access service, and guarantees communications line smooth. 1.1.2 phone machine, move the machine time is average urban ≤ 15th up to 25th; rural average ≤ 20th up to 30th. Phone machines, transfer machines since the telecommunications business operators to accept the time frame users machines, transfer machines from the date of payment, to the machine, move the machine to the time needed for normal conversation. 1.1.3 telephony complex time averaging less than 12 hours, a maximum of 24 hours. Complex time limit since the outage of telephone users the restore opening formalities, vested in the telecommunications business operators receiving fees, to phone to restore the time required to open. 1.1.4 users local business change time averaging less than 12 hours, a maximum of 24 hours. User to change time limit a user to handle local business name, transfer, suspend or shutdown as well as increase or decrease in a variety of service projects, starting from when the registration and settlement of accounts, to actually complete the time needed for change. 1.1.5 user long-distance service change time averaging less than 12 hours, a maximum of 24 hours. User time limit a user to handle long-distance service changes increase or decrease direct dial function, registration and settlement of accounts, starting to actually complete the time needed for change. 1.1.6 repair time is average urban telephone disorder less than 24 hours, a maximum of 48 hours; rural average is less than 36 hours, a maximum of 72 hours. Telephone barriers when the fixed time limit refers to the self-disclosure of user barrier, to troubleshooting or otherwise recover the user the time needed for normal communication. 1.1.7 as a non-user needs to change the user's phone number, telecommunication business operators should notify the user at least 45 days in advance, at least 15th in advance to inform users a new phone number. Number has changed the implementation date should be at least 45 days to all incoming users play continuously changed tone. Because the user needs to change the user's phone number, the original telecommunications business operators should be modified according to user needs to provide prompt business. 1.1.8 phone freeze time is a minimum of 90 days. Phone freezes after log off time refers to the number to the time required to re-enable. 1.1.9 telephone help desk, customer service center and the short message center answering for a maximum time limit of 15 seconds. Operators (including computer operator) response time means the user after dialing is complete, hear ring back tone to the operator (including computer operator) the time required to answer. Telephone help desk or customer service center and artificial short message center service response time limit: maximum of 15 seconds. Human Services response rate: ≥ 85%. Human Services response time means the user choices of human services, to human operator answers the needs of the time. Constructed response rate is in the access of the user of the service call help desk, customer service centers and the short message center, actual human operator answering service number and ratio of the total number of users to choose services. 1.1.10 the telecommunications business operator shall, in accordance with the relevant provisions provided phone numbers for businesses, directory information accuracy should be 95%. Directory information accuracy refers to the user's phone number has been registered with the telecommunications business operators, telecom operators to provide accurate operator assisted calls number than to all directory services. 1.1.11 telecommunications business operators on request public telephone agencies setting up spec-sign posting fees, valuation tools for use in line with national standards, according to the fees charged to the user, and accept supervision by the telecommunications authorities and telecommunication business operators and check. 1.1.12 telecommunications business operators should be based on user needs, provided free of charge to the user calls a detailed list queries. Original call data to be retained for at least 5 months. 1.2 fixed network local and domestic long-distance telephone services of communication quality indicator 1.2.1 average delay is less than 0.8 seconds before dialing, the maximum value is 1 second. Delay before dial-up users pick up the phone to hear a dial tone after the interval. 1.2.2 dial Hou delay same fixed network within phone user between of local call of dial Hou delay: average ≤ 1.9 seconds, maximum value for 5.3 seconds (has China first, letter makes Shi, maximum value for 10 seconds); same fixed network within phone user between of long-distance call of dial Hou delay: average ≤ 2.2 seconds, maximum value for 7 seconds (has China first, letter makes Shi, maximum value for 12 seconds); Dang fixed phone user between of call is by multiple fixed network common provides Shi, its local, and After the long distance dialing delay: average value should be less than 2.3 seconds, maximum value of 7.2 seconds (signaling, China first, up to 13 seconds). After dialing time delay from the user at the end of the dial, to receive the ring back tone or announcement signal interval. 1.2.3 connected rate same fixed network within, local call of end to end connected rate ≥ 95%; same fixed network within, domestic long-distance call of end to end connected rate ≥ 90%; Dang fixed phone user between of call is by multiple telecommunications network common provides Shi, its local, and long-distance call of connected rate ≥ 85%; fixed network and mobile network between call, connected rate ≥ 80%. Connection rate is user response, the called user busy, called Subscriber does not answer, end rejection, and is not available and the number of total calls. Right connection rate assessment at busy time statistics. 1.2.4 transmission loss of end-to-end transmission loss ≤ 21dB. Transmission loss is any connection made between two user end-to-end transmission loss. 1.2.5 singing and howling howling probability ≤ 0.1%; near singing probability ≤ 1%. 1.2.6 speaker speaker appears in the echo calls echo probability ≤ 1%. 1.2.7 understand cross-talk the same Exchange users appear to understand the probability of cross-talk between ≤ 0.1%; different Exchange users appear to understand the probability of cross-talk between ≤ 1%. 1.2.8 one-way transmission time local telephone ≤ 13 one-way transmission time in milliseconds; domestic long distance connections without the satellite circuit, one-way transmission time ≤ 85 milliseconds; installed DCME equipment and protection switching circuit caused by special circumstances such as long, one-way transmission time is less than 150 milliseconds. 1.2.9 network dropped call rate-4 dropped call rate of ≤ 2x10. Dropped call rate (loss) refers to the user during a call, the chance of an out. 1.2.10 send short message center response delay response delay of fixed network short message center averages less than 20 seconds, maximum is 45 seconds. Response delay of sending short message center caller by pressing the send key to its receiving sending short message Center accepts or does not accept the message of the time interval between confirmed. Fixed network short message response time delays include: call-connection time + upload time (depending on message length and ascending) + time (including caller ID authentication) + system echo (echo upload results). 1.2.11 short message center switch rate of fixed network short message center switch rate ≥ 95%. Rate of fixed network short message center system refers to the caller through the relay access to fixed-line message center or artificial to deal effectively with short message centre number and occupation into the ratio of the total number of relay. 1.2.12 short-term fixed network short message storage message storage period of validity less than 72 hours. Storage refers to the validity of fixed network short message sending SMS successfully sent, and confirmed by the sender's SMS Center, until the receiver successfully received, effective storage period of fixed network short message center. The storage period, the recipient should save the message short message center, and repeatedly sending attempts until you have successfully received by the receiving party or is beyond the time period. 1.2.13 SMS send delay sending SMS delay average less than 10 minutes, the maximum value of 24 hours. Short message sent rate ≥ 99%. SMS send delay means the caller received a short message after successfully confirmed, to the called user is received successfully to the short time interval between messages. 1.2.14 billing error rate billing error rate less than 10-4. Billing error rate refers to the probability of switching equipment billing error occurs, the following formula is used to calculate: for centralized billing: billing error rate = total words are wrong singular/singular; for single-or Multi-Metering: billing error rate = error pulse number/total number of pulses. Appendix 2: telecommunication service specification-digital cellular mobile communication services 2.1 digital cellular mobile communication service in quality of service indicators 2.1.1 telecommunications business operators should publicize its wireless network coverage and roaming range. 2.1.2 the telecommunications business operator shall be free to provide the fire, police, medical first aid, traffic accident alarm of public telephone access, and secure lines of communication open. 2.1.3 mobile complex time averaging less than 1 hour, up to 24 hours. Mobile complex opened time shutdown user go through the recovery procedures, telecommunications business operators receiving fees of belonging, to a mobile phone to restore the time required to open. 2.1.4 mobile phones businesses change time average is less than 1 hour, up to 24 hours. Mobile phone change time limit a user to handle rename, transfer, suspend or shut down services, registration and settlement of accounts, to the time needed for real change. 2.1.5 cell phone communication barrier repair time averaging less than 24 hours, a maximum of 48 hours. Mobile communication barriers when the fixed time limit refers to the self-disclosure of user barrier, to troubleshooting or otherwise recover the user the time needed for normal communication. Obstacle caused by non-mobile phone mobile phone communication barriers. 2.1.6 as a non-user needs to change the user's phone number, at least 45 days in advance to inform users of telecommunications business, at least 15th in advance to inform users a new phone number. Number has changed the implementation date should be at least 45 days to all incoming users play continuously changed tone. Because the user needs to change the user's phone number, the original telecommunications business operators should be modified according to user needs to provide prompt business. 2.1.7 the mobile phone number of minimum freezing time is 90 days. Mobile phone freezes after log off time refers to the number, to the time required to re-enable. 2.1.8 telephone help desk, customer service center and artificial time limit for answering short message Center: a maximum of 15 seconds. Operators (including computer operator) response time means the user dialing is finished, when they hear ring back tone until the operator (including computer operator) the time required to answer. Telephone help desk or customer service center labor service response time limit: maximum of 15 seconds. Human Services response rate: ≥ 85%. Human Services response time means the user choices of human services, to human operator answers the needs of the time. Constructed response rate is in the access of the user of the service call help desk, customer service centers and the short message center, actual human operator answering service number and ratio of the total number of users to choose services. 2.1.9 telecommunications business operators should be based on the needs of users, free of charge to provide users with a detailed list of mobile phone (prepaid service). Mobile phone original phone data and point-to-point short message service charge list raw data to be retained for at least 5 months. 2.2 2.2.1 quality standard for digital cellular mobile communication services communication access within the coverage area of a wireless network 90%, 99% time, move within 20 seconds can be connected. 2.2.2 connection rate within the same mobile network, local calls, connection rate ≥ 90%; within the same mobile network, domestic long distance calls, connection rate ≥ 85%; between two or more mobile network calls, or calls between mobile and fixed networks, and connection rate ≥ 80%. Through rate means the user response, the called user is busy, called Subscriber does not answer, is unavailable to a user and (including being called is not in service, called barring of incoming calls, remove the battery, shut down), the number and ratio of total active calls. Right connection rate assessment at busy time statistics. 2.2.3 after dialing delay after you move the user to the regular users of dial-up delay: average less than 9 seconds, maximum value of 12.5 seconds; fixed dial mobile users after dialing delay: average less than 9 seconds, maximum is 16 seconds after you move the user to the mobile user's dial-up delay: average ≤ 10.3 seconds, maximum is 19 seconds. After dialing time delay refers to the fixed end of the dial-up or mobile users by pressing the send key, to receive a ring-back tone, busy tone or voice prompts, such as the time interval between the moment. 2.2.4 a dropped call rate (call drop rate) dropped-call rate ≤ 5%. Drop call rate refers to the user during a call, the chance of an out. 2.2.5 congestion rate of the wireless channel (channel call loss) wireless channel congestion rate ≤ 3%. Wireless channel congestion rate due to wireless channels (including voice and signalling channels) congestion and lead to business failure rate. 2.2.6 mobile point-to-point short message sending rate mobile point-to-point short message sending rate ≥ 99%. Success rate of sending short message of mobile point to point message sender sends the message, to the message by the receiver (in received condition) the probability of successfully received. 2.2.7 mobile point-to-point short message sending delay mobile point to point message delay averages less than 3 minutes, the maximum value of 24 hours, mobile point-to-point short message sent rate ≥ 95%. Send a delay message short message of mobile point to point the sender sends the message, to the message by the receiver (in the normal receiving State) has successfully received the message interval. Sending short message of mobile point to point rates refer to in a timely manner within the prescribed delay sent within maximum send success event and send a success ratio of the total number of events. 2.2.8 short message of mobile point to point loss-5 short message of mobile point to point loss rate is less than 10. Loss of short message of mobile point to point rates refer to message is successfully sent, confirmed by the short message center to receive, within 24 hours of receiving (in received condition) is not the probability of receiving the message. 2.2.9 point-to-point short message storage mobile point-to-point short message validity period the validity period less than 72 hours. Short message storage period of mobile point to point message is successfully sent, confirmed by the short message center to receive, until you have successfully received by the receiving party, in short message center effective storage time period. In the storage period of the short message service center should save the message and attempts to send, until you have successfully received by the receiving party or is beyond the time period. 2.2.10 a billing error rate billing error rate less than 10-4. Billing error rate refers to the probability of switching equipment billing error occurs, the following formula is used to calculate: a billing error rate = total words are wrong singular/singular. Appendix 3: telecommunication service specification-Internet and other data communications services 3.1 Internet dial-up access business standards 3.1.1 3.1.1.1 service quality index of Internet dial-up access business account opening time of dial-up access network averaged less than 12 hours, a maximum of 24 hours. Account opening time refers to registered users of dial-up access network management network, telecommunication business operators receive cost of belonging, to dial the time required to open. 3.1.1.2 registered account dial-up access business change time averaging less than 12 hours, a maximum of 24 hours. Account dial-up access business change time limit a user to handle name, transfer services, starting from when the registration and settlement of accounts, to the time needed for real change. 3.1.1.3 billing card dial-up access business enter the card number and password should be able to sell the card operators committed during normal conditions of use, you should replace it. 3.1.1.4 billing card dial-up access services should be provided, such as balance inquiry function. 3.1.1.5 barrier repair time by dialing access device on average less than 8 hours, a maximum of 12 hours. Dial-up access to equipment obstacles when the fixed time limit refers to the self-disclosure of user barrier, to troubleshooting or otherwise recover the user the time needed for normal communication. 3.1.2 Dial Internet service quality targets 3.1.2.1 access through rate through rate ≥ 90% when the server is busy. Access through rate refers to the access server when the server is busy connect during busy times and the ratio of the total number of times users dial busy. 3.1.2.2 the local user access authentication response time average response time within 8 seconds, the maximum value is 11 seconds. Average response time is from the local user access authentication user submission account number and password, to a local authentication server to complete certification and return to the average response time. 3.1.2.3 access authentication certification success rate success rate ≥ 99%. Access authentication success rate refers to the user enter the account number, password, authentication success probability of correct case. Note: the wireless access authentication success rate and coverage area, air, and 99%, by telecommunications service operators indicated to the user conditions and indicators. 3.2 3.2.1 business service standards Internet data transfer data transfer on the Internet quality of service indicator business 3.2.1.1 telecommunications business operator shall inform the user that the Enterprise Internet Data Services service access point, network coverage, and interconnect with other networks. 3.2.1.2 accepted average less than 3 business days the time limit, a maximum of 5 working days. Accepted time frames refer to telecommunications business operators to network resources after user registration confirmation, responses users can install the needed time. 3.2.1.3 network opening time averaging less than 2 working days, up to 4 working days. NET opening time refers to telecommunication business operators with effect from the day of acceptance, to open networks the actual elapsed time for the user. 3.2.1.4 equipment barrier repair time is average less than 8 hours, a maximum of 12 hours. Barriers of communications equipment when repairing a time limit since the disclosure of user barrier, to troubleshooting or otherwise recover the user the time needed for normal communication. 3.2.2 Internet data transfer service quality indicators quality indicators provided for in this section, limits the scope between the two service access point, that is, to user-generated IP packets to the public, starting from the operator service access point is located in a city, across the national backbone network, delivered to the carrier in another city service access point (excluding metropolitan area network). These business indicators, two service access point select two cities in different provinces, and aerial distance of more than 1000 km. 3.2.2.1IP packet round trip delay between average delay is less than 200 milliseconds. IP packet round trip delay measured from an average packet length of the last bit of IP packets into Internet service access point (point a), arrives to end business access point (point b), then return to enter when an access point (point a). 3.2.2.2IP average packet delay variation delay variation ≤ 80 Ms. IP packet delay variation in a measurement time interval, IP packet maximum minimum transmission delay and IP packet transmission delay difference. 3.2.2.3IP average packet loss rate, packet loss rate is less than 2%. IP packet loss rate IP packet transmission between two points at the probability of loss. IP business availability 3.2.2.4IP availability 99.9%. IP business availability means users can use IP business and IP business full time ratio. For 5 minutes, if one IP network services provided by the packet loss rate is less than 75%, is of the view that time is available, otherwise it is unavailable. 3.3X.25, DDN, and frame relay data transmission services service standards 3.3.1X.25, DDN, and frame relay data transmission services quality of service indicator 3.3.1.1 accepted average less than 4 business days the time limit, a maximum of 8 working days. Accepted time frames refer to telecommunications business operators to network resources after user registration confirmation, responses users can install the needed time. 3.3.1.2 access turn-on time less than 3 working days of the local network, a maximum of 5 working days; long-distance network average less than 4 business days, up to 7 working days. NET opening time refers to telecommunication business operators with effect from the day of acceptance, to activate the service for the user, the actual use of time. 3.3.1.3 barriers of communications equipment repair time is ≤ 4 hours on average, a maximum of 8 hours. Barriers of communications equipment when repairing a time limit since the disclosure of user barrier, to troubleshooting or otherwise recover the user the time needed for normal communication. 3.3.2X.25 and the DDN and frame relay data communication business communication quality indicators quality indicators 3.3.2.1X.25 data transfer service 3.3.2.1.1 call setup delay targets are shown in table 1. Call setup delay of virtual connection a user sent "call" Group began to receive from the network "call connect" group after the end of time. Table 1 statistical indicators of the call setup delay value is given, the x value in table 1 are shown in table 2. 3.3.2.1.2 data packet transmission delay targets are shown in table 3. Data packet transmission delay from one packet starts with the last bit into the source node of the network, grouping to the left after the end of the time for the end of the first bit. Table 3 shows the statistical indicators for data packet transmission delay value, y value as shown in table 3 table 4. Table 1 statistical indicators of the call setup delay values table 2 statistical indicator values of the call setup delay of x values in table 3 statistical indicators for data packet transmission delay values table 4 statistical indicators for data packet transmission delay value y 3.3.2.1.3 virtual connection throughput targets are shown in table 5. Virtual connection throughput per unit of time, in one direction, connected by a successful transfer (not including lost, extra and bit errors) bits of user data. Table 5 shows the virtual connection throughput statistic values. Table 5 virtual connection throughput statistic index 3.3.2.1.4 call completion rate call completion rate ≥ 95%. Call completion rate refers to the number of call completion ratio of the total number of calls (not considering the called Terminal does not power on). 3.3.2.1.5 network availability, network availability ≥ 99.99%. Network availability that the end-to-end network can provide a fault-free service of time and ratio of total running time. 3.3.2.2DDN data transfer service quality indicator 3.3.2.2.1 bit error performance of end-to-end data transmission (1) international circuit is connected to the international circuit connecting a user-network interface (UNI) and DDN international node for user data transmission channel between the international circuit interface. Performance shall conform to M.2100 suggested that the PDH international channel, and transmission system operation and maintenance performance limits and M.2101 suggested that the international SDH channel, multiplexed input operations and maintenance requirements of the performance limits. (2) domestic circuit internal circuit connection in the user network interface (UNI) user data transfer path between. Performance shall conform to YD/T748-95 of the PDH digital channel error performance of maintaining limits and YDN026--1997 《 technical requirement for SDH transmission network – SDH digital channels and multiplex section into operational and maintenance requirements of the performance limits. 3.3.2.2.2 end-to-end data transfer time (1) dedicated circuit for 64kbit/s, end-to-end data transfer time ≤ 40 ms (2) dedicated circuit for 2Mbit/s, end-to-end data transfer time ≤ (0.5N+0.005G)-Ms: n is the number of circuit with switches and cross-connect equipment; g circuit length (km). (3) if in the above (1) and (2) each added a jump in satellite circuit at the above mentioned values you want in the additional transmission time of 300 milliseconds. DDN data transfer times from end to end is the end-to-end data transfer time in one direction. 3.3.2.2.3 network availability, network availability ≥ 99.9%. Network availability that the end-to-end network can provide a fault-free service of time and ratio of total running time. 3.3.2.3 communication frame relay data transmission services quality indicator 3.3.2.3.1 frame transmission delay (FTD) frame transmission delay (FTD)
