M38 数字通信设备 标准查询与下载
共找到 208 条与 数字通信设备 相关的标准，共 14 页
本标准规定了34368kbit/s光中继机(器)的质量等级及其要求。 本标准适用于34368kbit/s光中继机(器)，是考核该产品质量等级的依据。 本标准不适用于产品分选。
Quality grading criteria of optical repeater operating at 34368kbit/s
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1994-05-21
- 实施
- 1994-05-21
本标准规定了用于64kbit/sA 律PCM信道与32kbit/sADPCM信道之间相互转换的自适应差分脉冲编码调制(ADPCM)算法，说明了ADPCM编解码算法的原理，规定了算法的计算细则，给出了相应的数字测试序列。 本标准适用于公用网中使用，专用网中使用的32kbit/sADPCM也应参照采用本标准。
Adaptive differential pulse code modulation at 32kbit/s
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1994-03-26
- 实施
- 1994-09-01
本标准根据GB/T 13994《60路PCM/ADPCM 编码转换设备的技术要求》制定，规定了60路PCM/ADPCM编码转换设备测试条件和各种技术参数的测试方法。 本标准适用于公用网中使用的60路PCM/ADPCM编码转换设备各项技术性能的测试，专用网中使用的编码转换设备的测试也应参照采用本标准。 本标准规定的各项测试除某些2048kbit/s接口指标外，其余各项指标的测试一般应在任意两端设备的端口C的发送侧与端口C的接收侧对接下进行。 由于测试仪表的多功能、智能化、自动化、以及仪表的多样性，本标准所述的测试方法中仪表的配置应是原理性的。
Test method for 60-channel PCM/ADPCM transcoder equipment
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1994-03-26
- 实施
- 1994-09-01
Characteristics of a Synchronous Digital Multiplex Equipment Operating at 2048 kbit/s
- ICS
- CCS
- M38
- 发布
- 1994-01-01
- 实施
Type designation for digital communication equipment
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1993-08-17
- 实施
- 1994-02-01
本标准规定了2/34 Mbit/s跳群数字复用设备的技术性能要求和测试方法。 本标准适用于数字传输系统中使用的工作在34368 kbit/、并采用正码速调整的跳群数字复用设备。
Technical requirement and test method of 2/34Mbit/s aggregate number-jump digital multiplex equipment
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1993-07-01
- 实施
- 1993-12-01
Generic specification for 64/32kbit/s time division multiplex equipments
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1993-05-11
- 实施
- 1993-07-01
Methods of measurement for electronic performance of 64kbit/s time division multiplex equipments
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1993-05-11
- 实施
- 1993-07-01
over 4 kHz, of an angle-modulated carrier; that the methods described in Annex 1 be used for the calculation of the maximum power density, averaged
Maximum Equivalent Isotropically Radiated Power of Radio-Relay System Transmitters Operating in the Frequency Bands Shared with the Fixed-Satellite Service
- ICS
- 33.060.20
- CCS
- M38
- 发布
- 1993-04-01
- 实施
This Recommendation specifies the stage 3 of the diversion supplementary services for the Integrated Services Digital Network (ISDN) as provided by public telecommunications operators at the T reference point or coincident S and T reference point (as def
Stage 3 Service Description for Call Offering Supplementary Services Using DSS 1 - Diversion Supplementary Services - Digital Subscriber Signalling System No. 1 (Study Group XI) 69 pp
- ICS
- 33.060.80
- CCS
- M38
- 发布
- 1993-03-01
- 实施
his supplementary service provides the ability of indicating the ISDN number of the calling line, with possible additional sub-address information (i.e. the Calling party sub-address information element), to the called party.
Stage 3 Description for Number Identification Supplementary Services Using DSS 1 Clause 3 - Calling Line Identification Presentation (CLIP) Clause 4 - Calling Line Identification Restriction (CLIR) Clause 5 - Connected Line Identification Presentation (C
- ICS
- 33.060.80
- CCS
- M38
- 发布
- 1993-03-01
- 实施
TRANSMISSION ASPECTS OF DIGITAL MOBILE RADIO SYSTEMS
- ICS
- CCS
- M38
- 发布
- 1993-03-01
- 实施
TRANSMISSION ASPECTS OF DIGITAL MOBILE RADIO SYSTEMS
- ICS
- CCS
- M38
- 发布
- 1993-03-01
- 实施
The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecommunication
(WITHDRAWN) Stage 3 Description for Call Completion Supplementary Services Using DSS 1 Clause 2: Call Hold Digital Subscriber Signalling System No. 1 Stage 3 Description for Supplementary Services Using DSS 1 Study Group XI
- ICS
- 33.060.80
- CCS
- M38
- 发布
- 1993-03
- 实施
本标准规定了PCM基群信令接口设备的设备分类，技术要求和测试方法。 本标准适用于采用随路信令方式的基群信令接口设备和带信令接口的PCM基群复用设备。
Technical requirement and test method for interface equipments for PCM group signaling
- ICS
- 33.040.40
- CCS
- M38
- 发布
- 1993-01-18
- 实施
- 1993-07-01
The ïïü Telecommunication Standardization Sector (ïïü-T) is a permanent organ of the International Telecommunication Union. The ïïü-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to
Stage 3 Description for Community of Interest Supplementary Services Using DSS 1 Clause 3 - Multi-Level Precedence and Preemption (MLPP) - Digital Subscriber Signalling System No. 1 Stage 3 Description for Supplementary Services Using DSS 1 (Study Group X
- ICS
- 33.060.80
- CCS
- M38
- 发布
- 1993-01-01
- 实施
Stage 3 Description for Multiparty Supplementary Services Using DSS 1 Clause 1 - Conference Calling Clause 2 - Three-Party Service - Digital Subscriber Signalling System No. 1 Stage 3 Description for Supplementary Services Using DSS 1 Study Group XI; 65
Stage 3 Description for Multiparty Supplementary Services Using DSS 1 Clause 1 - Conference Calling Clause 2 - Three-Party Service - Digital Subscriber Signalling System No. 1 Stage 3 Description for Supplementary Services Using DSS 1 Study Group XI; 65 p
- ICS
- 33.060.80
- CCS
- M38
- 发布
- 1993-01-01
- 实施
This Recommendation applies to systems using types of cable so far recommended by the CCITT (see Recommendation G.611) and providing 1, 2, 3, 4 or 5 groups or 2 supergroups.
GENERAL CHARACTERISTICS RECOMMENDED FOR SYSTEMS ON SYMMETRIC PAIR CABLES
- ICS
- CCS
- M38
- 发布
- 1993-01-01
- 实施
This Recommendation applies to systems using types of cable so far recommended by the CCITT (see Recommendation G.611) and providing 1, 2, 3, 4 or 5 groups or 2 supergroups.
GENERAL CHARACTERISTICS RECOMMENDED FOR SYSTEMS ON SYMMETRIC PAIR CABLES
- ICS
- CCS
- M38
- 发布
- 1993-01-01
- 实施
This Recommendation defines the characteristics of a synchronous multiplex equipment currently used for applications in dedicated data networks, to combine up to 23 tributary channels at 64 kbit/s in a 1544 kbit/s digital stream
CHARACTERISTICS OF SYNCHRONOUS DIGITAL MULTIPLEX EQUIPMENT OPERATING AT 1544 kbit/s
- ICS
- CCS
- M38
- 发布
- 1993-01-01
- 实施
