Cisco Systems 3825 manual GSM Only Configuration, Channel-group 0 timeslots

Appendix B Configuration Examples

Overview

GSM Only Configuration

The standard GSM topology includes one or more shorthaul interface connections from the BTS to a RAN-O device via separate T1/E1 connections. The RAN-O devices are connected back-to-back using an MLPPP backhaul connection (two or more T1/E1 connections). At the BSC side, the RAN-O to BSC connectivity is exactly like the BTS to RAN-O connections. In this scenario, only GSM traffic traverses the topology (see Figure B-8).

Figure B-8	GSM Only Configuration
		GSM Only Configuration
	S0/0/0	Multilink1	Multilink1	S0/0/0
	S0/1/0	10.10.10.1	10.10.10.2	S0/1/0
		MWR_A
BTS				MWR_B

270641

BSC

MWR_A

!

card type E1 0 0 card type E1 0 1

!

!

redundancy mode y-cable

standalone

!

network-clock-participate wic 0 network-clock-participate wic 1 network-clock-participate aim 1 network-clock-select 1 E1 0/0/1

!

ipran-mib snmp-access inBand ipran-mib location cellSite

!

!

controller E1 0/0/0 framing NO-CRC4 clock source internal

channel-group 0 timeslots 1-31

!

controller E1 0/0/1 channel-group 0 timeslots 1-31

!

controller E1 0/1/0 framing NO-CRC4 clock source internal

channel-group 0 timeslots 1-31

!

!

class-map match-any llq-class match ip dscp ef

!

!

policy-map llq-policy

	Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03		B-55