Avaya Media Gateway G350, Maintenance Manual

Page: 176 / 332

Avaya Communication Manager controlled maintenance
MG-DS1 (DS1 Interface Media Module)
176 Maintenance of the Avaya G350 Media Gateway
June 2004
Echo cancellation is turned on or off on a trunk group basis using the
change trunk-group
command.
If the TRUNK GROUP field,
DS1 Echo Cancellation?
is set to
y
, echo cancellation will be
applied to every MM710 trunk member in that trunk group. The echo cancellation parameters used for a
given trunk member are determined by the Echo Cancellation Configuration Number administered on the
DS1 Media Module
form for that specific trunk’s board.
NOTE:
It is not necessary to busyout a port or trunk group to change the
DS1 Echo
Cancellation?
field on page 2 of the change trunk-group form; however, the
modified setting will not take effect until one of the following occurs:
•
Port is busied-out/released
•
Trunk group is busied-out/released
•
Test trunk group is executed
•
Periodic maintenance runs
Echo cancellation on the MM710 is selectable per channel, even though it is administrable on a trunk
group basis. For example, if all but two ports on a MM710 need to have echo cancellation applied, those
two ports must be put in a trunk group where the
DS1 Echo Cancellation
field is set to
n
. The
remaining ports will be in a trunk group(s) where the
DS1 Echo Cancellation
field is set to
y
. A
user will have the ability to cancel echo coming from the network (far-end echo) or coming from the
switch (near-end echo).
MM710 DS1 Media Module
The MM710 Universal DS1 Interface Media Module provide an interface to the DS1 facility, and are
designed to support 24 DS0 channels on a 1.544 Mbps DS1 link, or 32 DS0 channels on a 2.048 Mbps
link. The DS0 channels can be administered as trunks to other switches, lines to off-premises stations,
ports to line-side PRI terminating devices, or ports to other line-side non-PRI terminating devices. (DS0
channels on the MG-DS1 can only be administered as trunks to other switches.) For more information on
how MM710 ports can be used, see the maintenance objects (MOs): ISDN-SGR, ISDN-TRK, ISDN-
LNK, TIE-DS1, CO-DS1, DID-DS1, and WAE-PT.
NOTE:
The MM710 provides Echo Cancellation, and in addition, the MM710 firmware may be
updated using the firmware download feature.
The MG-DS1 maintenance strategy includes logging in-line errors reported by the MG-DS1 Media
Module, running tests for error diagnosis and recovery, and raising or clearing maintenance alarms.
MM710 Media Modules support the following:
•
Digital Tie, CO, and DID trunks
•
DS1 off-premises (OPS) lines
•
Narrowband and wideband access endpoint ports
•
ISDN-PRI trunks and accompanying signaling channel
•
PRI endpoint ports (PE-BCHL) and accompanying signaling channel
Each trunk, line, or endpoint has its own maintenance strategy, but all depend on the health of the MG-
DS1 Interface Media Module. Refer to the following MOs for details: TIE-DS1, CO-DS1, DID-DS1,
OPS-LINE, ISDN-TRK, ISDN-LNK, ISDN-SGR, WAE-PT and PE-BCHL.