【资料名称】：GB interface

【资料作者】：NOKIA SIEMENS

【资料日期】：2009.3

【资料语言】：英文

【资料格式】：PPT

【资料目录和简介】：
1Configuration options for Gb3
2Gb via Frame Relay7
2.1Structure of the 2 Mbit/s frame acc. to G.7048
2.2Alarms8
2.3CRC4-synchronization for primary multiplexer10
2.4PCM transmission systems12
2.5Baseband transmission of digital signals13
2.6Interface codes14
2.7Reasons for bit errors18
3Frame Relay21
3.1Structure of a Frame Relay data packet22
3.2Address field formats24
3.3Addressing24
3.4Congestion control26
3.5Link supervision28
4Gb via Ethernet31
4.1General remarks on Ethernet32
4.2General remarks on IP36
4.3General remarks on UDP44
5Gb via SDH47
5.1Overview48
5.2General remarks on SDH50
5.3General remarks on ATM52
6Network Service NS layer59
6.1Definitions60
6.2NSVC via a FR network62
6.3NSVC via an IP network64
7BSS GPRS Protocol BSSGP67
7.1General remarks on BSSGP68
7.2BSSGP Virtual Connection (BVC)70
7.3Signaling procedures70
7.4Formatting rules76
7.5BSSGP Protocol Data Units (BSSGP PDU)82
8Exercise85
9Solution89