DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-669H323-BCH (H.323 B-Channel)
3
H323-BCH (H.323 B-Channel)
No maintenance diagnostic tests exist for this object.
H.323 signaling is very similar to ISDN Q.931 sig naling. In order to take advanta ge of
existing Definity ISDN call processi ng software, H.323 trunk call proc essing includes H.323
signaling group s, H.323 D-channels and H.323 B-c hannels. H.323 Signaling group s are
similar in concept to ISDN PRI signaling g roups. H.323 D-channels are an artific ial
fabrication created only to allow maximum re-use of system ISDN code. H.323 B-c hannels
are also an artificial fabric ation.
No physical hardware c omponents make up the H.323 B-c hannel object disc ussed here.
Along with the D-channel, these ob jects allow existing ISDN call p rocessing to be re-used
for H.323 trunking. The H.323 signaling g roup is not a collection of p hysical D-channels that
exist on one or more DS1 facilities. The H.323 signaling g roup can be co nsidered to be one
D-channel that physically rides on a C-LAN port and the I P network. Unlike ISDN
D-channels, the H.323 D-channel may ac tually come up and d own on a call-by-c all basis.
So the H.323 D-channel is actually a TCP/IP signaling channel . Layer 1 and 2 of this
signaling channel can be monitored by IP PING testing.
Performance in terms of voice latenc y for a signaling g roup is monitored by b ackground
measurements being collec ted by the TN802B Media Processor b oard.
H.323 B-channels actually use TN802B Med ia Processor ports to carry the ac tual bearer.
The TN802B is a service circuit. On a cal l-by-call basis, any p ort of a TN802B may be
serving an H.323 station or a H.323 B-channe l. Status information may exist for a specific
H.323 B-channel, and an H.323 B-c hannel may be busied out an d released, but no
maintenance diagnostic tests will exist for the object.
Errors are logged for
craft
busyout conditions. The system receives service state upd ates
for
craft
-driven busyout/release. Under no rmal conditions the system automati cally places
H.323 B-channels into or out of service wh en it receives an H.323 signaling -group service
state update.
Craft
busyout drops ac tive calls.
Error Log Entries and Test to Clear Values
Table 3-279. H323-BCH B-Channel Error Log Entries
Error
Type
Aux
Data Associated Test
Alarm
Level
On/Off
Board Service State
18 Any B-channel busied out Warning off
OOS
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