Quick Configuration Guide for A7000 dl 8xT1/E1 Wide Module 2005-04

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The following steps demonstrate configuring a T1 network interface with all timeslots
(1 through 24) reserved for data.
1. At the (config-t1 3/1)# prompt, enter tdm-group 1
timeslots 1-24 to create a TDM group
for DS0s 1 through 24 on the T1 network connection (t1 3/1).
2. Enter no shutdown to activate the T1 interface.
3. Enter exit to return to the Global Configuration mode.
1. At the (config)# prompt, enter interface e1 3/1 to activate the interface configuration mode
for the E1 network interface.
2. If necessary (this is the default), enter clock source line
to configure the unit to recover
clocking from the E1 network connection.
The following steps demonstrate configuring an E1 network interface with timeslots 1 through 31
for data.
1. At the (config-e1 3/1)# prompt, enter framing crc4 to enable CRC-4 framing on the
interface.
2. Enter tdm-group 1
timeslots 1-31 speed 64 to create a TDM group for timeslots 1 through
31 on the E1 network connection (e1 3/1).
3. Enter no shutdown to activate the interface.
4. Enter exit to return to the Global Configuration mode.
Create the T1 Interface TDM Group
Configure the E1 Network Interface
Note
Repeat Configure the E1 Network Interface and Create the E1 Interface TDM Group
for all E1 network interfaces. Each interface must be configured individually.
Note
If two routers are configured on a private E1 using PPP (as in the PPP diagram),
one router must be configured for clock source internal to provide timing on the
circuit and the other to clock source line. Configuring the routers as such
provides a single master clock on the point-to-point circuit and avoids timing
issues. This only applies to circuits that do not contain timing sources from the
provider. Frame Relay circuits inherently have a provided clock source, so all
routers connected to the public Frame Relay network should be set to clock
source line to recover clocking from the network source and avoid timing issues.
Create the E1 Interface TDM Group
Note
Timeslot 0 is for synchronization, alarm transport, and international carrier use. It
is not accessible for use for voice or data.