33.040.30 交换和信令系统 标准查询与下载

ANSI/TIA-596-1992 公共转换数字服务的网络信道终接设备

These requirements apply to a device between an end-user DTE and the network interface (NI) of an intraLATA or interLATA carrier

Network Channel Terminating Equipment for Public Switched Digital Service

ANSI T1.615-1992 第1号数字用户信令系统(DSS1).第3层概述

The Digital Subscriber Signalling System No. 1 (DSS1) is a suite of protocols that provide the means for users to invoke the full range of services and capabilities available from an ISDN.

Digital Subscriber Signalling System No.1 (DSS1) - Layer 3 Overview

ANSI/ATIS 1000608.a-1992 综合服务数字网(ISDN).一号数字用户信令系统(DSS1)X.25分组交换承载业务信令规范(封包模式数据的终端初始程序)

Integrated Services Digital Network (ISDN) - Signaling Specification for X.25 Packet-Switched Bearer Service for Digital Subscriber Signaling System Number 1 (DSS1) (Terminal Initialization Procedures for Packet-Mode Data)

ANSI/ATIS 1000118-1992 电信.7号信令系统(SS7).中间信号网络识别(ISNI)

Signalling System Number 7 (SS7) - Intermediate Signalling Network Identification (ISNI)

ANSI/ATIS 1000615-1992 数字用户1号信令系统(DSS1).第三层概述

Digital Subscriber Signalling System No.1 (DSS1) - Layer 3 Overview

ARMY MIL-C-55607 A VALID NOTICE 1-1991 CV-1548()/G电话信号转换器

This commercial item description covers brown kraft paper used for general wrapping applications.

CONVERTER, TELEPHONE SIGNAL CV-1548( )/G

ANSI T1.611-1991 通信.第7号信令系统(SS7).非ISDN用户的辅助服务

Describes thirteen services for non-integrated services digital network (non-ISDN) subscribers along with their supporting SS7 protocols. They provide enhanced functionality for user with non-ISDN interfaces who access SS7 capable networks.

Telecommunications – Signalling System Number 7 (SS7) – Supplementary Services for non-ISDN Subscribers

ANSI/ATIS 1000611-1991 电信.7号信令系统(SS7).非综合业务数字网(ISDN)用户的补充业务

Telecommunications - Signalling System Number 7 (SS7) - Supplementary Services for non-ISDN Subscribers

IEEE 1007-1991 测量脉冲编码调制(PCM)电信线路和系统传输特性用的方法和设备

Methods and equipment for measuring the transmission characteristics of pulse-code modulation (PCM) telecommunications circuits and systems

NAVY MIL-T-22143 A VALID NOTICE 1-1991 TT-264/AG电传打字电报机

MIL-T-22143AIAS) (3), dated 1 October 1964, has been reviewed and determined to be valid for use in acquisition.

TELETYPEWRITER, TT-264/AG

BS 6450-7:1990 连接由某些公共长途电话接线员操作的专用分组交换机.第7部分:型号审批过程中专用分组交换机使用观察的程序规范

Specifies the assessment of PBXs against the integrity of service requirements in BS 6450-1:1983 and the observation of PBXs against appropriate Parts of BS 6450 under operational conditions.

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators - Specification for the procedure for in-service observation of PBXs undergoing type approval

ARMY MIL-T-49110 (1)-1990 TA-838()/TT型电话机

This amendment forms part of MIL-T-49110(EL), dated 12 April 1977 and I a approved for use by the Communications-Electronics Command, Department of the Army and I s available for use by lDepartments nd Agencies of the Department of Defense.

TELEPHONE SET TA-838( )/TT

ANSI/INCITS 178-1990 信息系统.公用网之间提供数据传输业务的分组交换信令系统的补充(网络用户标识实用扩展和格式约束条件)增补件A:1991 代替ANSI X3.178

CCITT Recommendation X.75, Packet-Switched Signalling System Between Public Networks Providing Data Transmission Services, defines the interface between public networks providing data transmission services in the packet-switched mode. The 1988 (Blue book) version of the Recommendation is the current official version of the X.75 interface definition. Subsequent references to X.75 in this document will be to the 1988 version unless otherwise stated. This standard adopts the international X.75 standard, with modifications and extensions to apply to interfaces between public networks within the United States.

Information Systems - Supplement to Packet-Switched Signaling System between Public Networks Providing Data Transmission Services (NUI Utility Extensions and Format Constraints) Supplement A: 1991; Replaces ANSI X3.178

ANSI T1.116-1990 电信 7 号信令系统 (SS7) 操作、维护和管理部分 (OMAP)

Telecommunications - Signalling System Number 7 (SS7) - Operations, Maintenance and Administration Part (OMAP)

NAVY MIL-I-85846 A-1990 AN/AIC-14A型内部通信设备声频放大器AM-3889/AIC-14A的一般规格

This specification establishes the design, performance and acceptance requirements for AM-3889/AIC-l4A Audio Frequency Amplifier, herein referred t o as the AM-3889.

INTERCOMMUNICATION SETS, AN/AIC-14A AUDIO FREQUENCY AMPLIFIER AM-3889/AIC-14A, GENERAL SPECIFICATION FOR

ANSI/ATIS 0100302-1989 32 kbit/s自适应差分脉冲编码调制(ADPCM)用音频信号线格式的数字处理

Digital Processing of Voice-Band Signals-Line Format for 32 kbit/s Adaptive Differential Pulse-Code Modulation (ADPCM)

ITU-T E.427-1988 国际自动化服务客户难点度量专项服务质量观测数据采集与统计分析

Collection and statistical analysis of special quality of service observation data for measurements of customer difficulties in the international automatic service

ITU-T E.540-1988 国际连接国际部分的总体服务等级

Overall grade of service of the international part of an international connection

ITU-T E.800 SUPP 1-1988 Erlang 公式表

Table of the Erlang formula

ITU-T G.212-1988 模拟系统的假设参考电路

Hypothetical reference circuits for analogue systems