Demand test descriptions and error codes - Avaya Support

H323-BCH (H.323 B-Chel)
H323-BCH (H.323 B-Chel)
No maintenance diagnostic tests exist for this maintenance object.
H.323 signaling is similar to ISDN Q.931 signaling. In order to take advantage of existing ISDN
Avaya Communication Manager, H.323 trunk Avaya Communication Manager software
includes H.323 signaling groups, H.323 D-Chels and H.323 B-Chels. H.323 signaling groups
are similar in concept to ISDN PRI signaling groups. H.323 D-chels are an artificial fabrication
created only to allow maximum re-use of system ISDN code. H.323 B-Chels are also an artificial
fabrication.
No physical hardware components make up the H.323 B-Chel object discussed here. Along
with the D-Chel, these objects allow existing ISDN Communication Manager software to be
re-used for H.323 trunking. The H.323 signaling group is not a collection of physical D-chels that
exist on one or more DS1 facilities. The H.323 signaling group can be considered to be one
D-Chel that physically rides on a C-LAN port (IP-PROCR port in an S8300 system) and the IP
network. Unlike ISDN D-chels, the H.323 D chel may come up and down on a call-by-call basis.
So, the H.323 D-Chel is actually a TCP/IP signaling chel. Layer 1 and 2 of this signaling chel
may be monitored by IP PING testing.
Performance in terms of voice latency for a signaling group is monitored by background
measurements collected by the Media Processor board.
H.323 B-Chels use Media Processor ports to carry the actual bearer. The Media Processor port
is a service circuit. On a call-by-call basis, any port of a media processor may be serving an
H.323 station or an H.323 B-Chel. Status information may exist for a specific H.323 B-Chel, and
an H.323 B-Chel may be busied out and released, but no maintenance diagnostic tests will exist
for the object.
Errors are logged for craft busyout conditions. The system receives service state updates for
craft-driven busyout/release. Under normal conditions the system automatically places H.323
B-Chels into or out of service when it receives an H.323 signaling-group service state update.
Craft busyout drops active calls.
Error log entries and recommended actions
Table 134: H323-BCH B-Chel Error Log Entries
Error
Type
Aux
Data
Associated Test Alarm
Level
On/Off
Board
Service
State
18 (a) Any B-Chel busied out Warning off OOS
Note:
a. Error Type 18: This specific H.323 trunk group member has been busied-out by command.
Enter release port location to put the port in the in-service state.
Issue 5 May 2009 491