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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-291BRI-SET, ASAI-ADJ, BRI-DAT
3
or Lucent adjuncts. The TN2208 ESAI MFB is handled by switch software as it is
an ISDN BRI compatible board and all maintenance actions referring to ASAI and
Lucent Adjunct Links in this section apply.
ISDN-BRI endpoints come in a number of configurations. All endpoints require
the D-channel to convey signaling information to the switch. A voice-only set
requires only one B-channel. A voice and data-capable set requires both
B-channels (one for voice and one for data). Therefore, each TN556 port can
support either two voice-only sets or one voice and data-capable set. Only a
single ASAI or Lucent adjunct may be connected to an ISDN-BRI port. Multiple
adjuncts per line are not supported.
Figure 3-14
illustrates the physical connection (solid line) between an ISDN-BRI
Circuit Pack and a voice or voice/data set. Each physical connection allows for
two B-channels, as stated above, plus one D-channel. Each ISDN-BRI circuit
pack can support up to 12 of these PHYSICAL connections to different voice and
voice/data sets or ASAI and Lucent adjuncts.
Figure 3-14. ISDN-BRI Set Interactions
This section contains the ISDN-BRI Set, ASAI Adjunct, and Lucent Adjunct
Maintenance documentation. Some of the results of maintenance testing of the
ISDN-BRI Set or the ASAI and Lucent Adjunct may be affected by the health of
the ISDN-BRI circuit pack and Port. These interactions should be kept in mind
when investigating the cause of ISDN-BRI Set problems.
BRI Line
Circuit Pack
P
O
R
T
D-Channel
B-Channel
B-Channel
PHYSICAL CONNECTION
VOICE
or DATA
SET
Logical Connection
VOICE
or DATA
SET
PBX
Physical Connection