NetVanta 950 IAD Configuration Guide
Configuring Your IAD
61200788L1-29.1B
© 2004 ADTRAN, Inc.
17
T1 Ports
From the prompt,
IAD#
, enter
configure
terminal
. All interfaces will be configured from within the
configure terminal mode. Enter interface
t1 0/1
to configure the controller’s first T1 port (0/1).
Settings
The T1 interface is set for B8ZS coding, ESF framing, and 0 dB line build out (LBO) by default. If the
user wanted to change coding, for example, typing
coding ami
would configure the T1 port for AMI
coding. For framing, type
framing d4
to configure the interface for D4 framing. The IAD supports
four different settings for Line Build Out. Type
lbo -22.5
to set the Line Build out to
-22.5 dB
. Other
settings include
-15
and
-7.5
. See the AOS Command Reference Guide for a complete list of all T1
commands, or type
?
at the prompt.
TDM Groups
TDM groups are used to assign a number of DS0s to a particular interface. By creating a TDM group,
the user sets aside a block of T1 channels for use in a particular cross connect. You can assign 24 DS0s
to a T1 interface by typing
tdm-group 1 timeslots 1-24
. This command creates TDM group 1 for the
interface ("one" was chosen arbitrarily; it could be any value between 1 and 255) and assigns channels
1-24 to it.
Activation
The last step of the T1 interface configuration is to activate the T1 interfaces by typing
no shutdown
from the
IAD (config-t1 0/1)#
prompt for T1 WAN 0/1 or the
IAD (config-t1 0/2)#
prompt for T1
Verifying Your Configuration Using Show Commands
on page 36 section for more
information on the status of the T1 port.
Clock Source
The clock source provides the reference point for all voice and data traffic in the system. There can
only be one active clock source for the system; otherwise clock slips may occur on the other T1
interfaces resulting in noise on voice lines and errors on data circuits. Options include
internal
,
t1 0/1
,
or
t1 0/2
. The default clock source is
t1 0/1
. For example, type
clock source t1 0/2
to set the timing
source to the controller's second T1 port. The system also allows a secondary clock source for backup
timing. In the event of a failure of the primary source, the system switches over to the secondary
source. To configure T1 0/1 as a secondary timing source, type
clock source t1 0/1 secondary
.
Voice Ports (FXS)
From the prompt,
IAD#
, enter
configure terminal
. All interfaces will be configured from within the
configure terminal mode. Enter
interface fxs 2/1
to configure the first FXS port on the access module
in slot 2.
The user may configure each port one at a time or use the
range
command to set a group of ports at the
same time. To use the
range
command, type
interface range fxs s
lot x/port a-b, fxs slot y/port a-b
where slot x and y are slots with FXS cards installed and port a-b specifies the range of ports to be
configured. For example, to configure FXS slot 3, ports 1-8 and FXS slot 5, ports 1-4, from the Global
configuration prompt, type
interface range fxs 3/1-8, fxs 5/1-4
. Then type the desired command to
configure all 12 of the specified ports identically.
