Managing Trunks
Setting up digital trunks
362
Administrator’s Guide for Avaya Communication Manager
November 2003
More information
T1 recommended settings
The table below shows recommended settings for standard T1 connections to your local exchange carrier.
If you use b8zs line coding and esf framing, it will be easier to upgrade your T1 facility to ISDN should
you want to. You can upgrade without reconfiguring external channel service units, and your service
provider won’t have to reconfigure your network connection.
E1 recommended settings
DS1 administration for E1 service varies from country to country. See Avaya MultiVantage™ Application
Notes for Type Approval and use the DS1 screen illustrations in the chapter for your country as a model
for your administration.
NOTE:
Remember that the central office serving your switching system may be emulating another
country’s network protocol. If so, you’ll have to administer your circuit packs and trunk
groups to match the protocol used by your central office.
Enhanced DS1 administration
Normally, you can’t change the DS1 Circuit Pack screen unless you remove all related trunks from their
trunk group. However, if the
DS1 MSP
field on the System-Parameters Customer-Options screen is y
and you are assigned the associated login permissions, you can change some of the fields on the DS1
Circuit Pack screen without removing the related trunks from their trunk group.
The following enhanced DS1 administration login permissions must be assigned on the Command
Permission Categories screen:
•
The
Maintain Enhanced DS1
field must be y.
•
The
Maintain Trunks
field must be y.
•
The
Maintain Switch Circuit Packs
field must be y.
Field
Value
Notes
Line Coding
b8zs
Use ami-zcs if b8zs is not
available.
Signaling Mode
robbed-bit
Robbed-bit signaling gives you
56K bandwidth per channel. If you
need a 64K clear channel for
applications like asynchronous data
transmission or remote
administration access, use common
channel signaling.
Framing
esf
Use d4 if esf is not available.