Isdn-Trk (Ds1 Isdn Trunk) - Avaya DEFINITY Server CSI Maintenance Manual

ISDN-TRK (DS1 ISDN Trunk)

ISDN-TRK (DS1 ISDN Trunk)
MO Name (in
Alarm Log)
1
ISDN-TRK
ISDN-TRK
ISDN-TRK
1. For additional repair information, refer to the "DS1-BD (DS1 Interface Circuit Pack)"
maintenance object.
2. A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded
by the set options command and that at least 75 percent of the trunks in this trunk
group are alarmed.
A DS1 ISDN Trunk is known as a B-channel. It is a 64 kbps Bearer channel that
can be used to transmit digital traffic, be it voice or data. These trunks use a
separate channel for signaling (for example, for call setup); this mode of operation
is known as out-of-band signaling, as opposed to in-band, robbed-bit signaling,
where the signaling traffic flows over the same channel as the voice or data traffic.
The separate signaling channel is called a D-channel in ISDN terminology, and it
carries all the call control signaling messages for the DS1 ISDN Trunk
B-channels. The D-channel for these B-channels is an ISDN-PRI (Primary Rate
Interface) Signaling Link Port (ISDN-LNK/ISDN-PLK).
On 24-channel interfaces, any of the first 23 ports on the DS1/UDS1 interface
circuit pack can be a B-channel. The 24th port may be used as a B-channel or as
a D-channel depending on the type of ISDN-PRI Signaling Group (ISDN-SGR) to
which it belongs.
555-233-119
Initial Command to
Alarm Level
2
MAJOR test port PCSSpp l
MINOR test port PCSSpp l
WARNING test port PCSSpp sh
Run Full Name of MO
DS1 ISDN Trunk
DS1 ISDN Trunk
DS1 ISDN Trunk
Issue 5 October 2002
1303