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Communication Manager Maintenance-Object Repair Procedures
2224 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
TBRI-TRK (Trunk-Side ISDN BRI Channel)
S8700 | 8710 / S8500 / S8300
The TN2185 circuit pack contains eight, 4-wire ports that interface to the network at the ISDN S/
T reference point over two 64-kbps channels (B1 and B2) and over a 16-kbps signaling (D)
channel.
Note:
Note: S8300 / G700: Although the TBRI-TRK MO is provided for a G700 media gateway,
this MO only partially supports the G700’s MM720 BRI media module.
The B1 and B2 channels can be simultaneously circuit-switched, or individually
packet-switched. Only one channel per trunk can be packet-switched due to PPE (Packet
Processing Element) limitations. The D channel is either circuit- or packet-switched. Packet
switching uses the PPE to combine all D channels into a single physical channel, which is then
routed via the concentration highway to the NCE (Network Control Element) and then to the
TDM bus. The circuit-switched connections have a Mu-law or A-law option for voice and
operate as 64-kbps clear data channels. The packet-switched channels support the LAPD
protocol and conform with the CCITT Q.920 Recommendations for D-channel signaling.
LEDs
The three LEDs on the circuit pack’s faceplate indicate board status. When illuminated, the red
LED indicates a board failure or a major or minor on-board alarm, the green LED indicates that
testing is in progress, and the amber LED indicates that the board is in use.
MO Name Alarm Level Initial SAT Command to Run Full Name of MO
TBRI-TRK
1
1. For additional repair information, also see TBRI-BD (TN2185 ISDN Trunk-Side BRI) on page 2192 and
TBRI-PT (ISDN Trunk-Side BRI Port)
on page 2200 maintenance documentation.
MAJ
2
2. A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by set options
and that at least 75 percent of the trunks in this trunk group are alarmed.
test trunk location l Trunk-Side ISDN BRI Channel
TBRI-TRK MIN test trunk location l Trunk-Side ISDN BRI Channel
TBRI-TRK WRN test trunk location sh Trunk-Side ISDN BRI Channel