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Communication Manager Maintenance-Object Repair Procedures
2200 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
TBRI-PT (ISDN Trunk-Side BRI Port)
S8700 | 8710 / S8500 / S8300
This document describes the port maintenance features of the TN2185 Trunk-Side ISDN-BRI
board. The circuit pack provides 8 S/T ISDN 2B+D ports that interface to either the central office
or another PBX.
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. 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.
Note:
Note: S8300 / G700: Although the TBRI-PT MO is provided for a G700 media gateway,
this MO only partially supports the G700’s MM720 BRI media module.
LEDs
The three LEDs on the circuit pack’s faceplate indicate a board’s 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. The amber LED indicates that the board is in use.
MO Name Alarm Level Initial SAT Command to Run Full Name of MO
TBRI-PT MAJ test port location l r# TBRI-PT
TBRI-PT MIN test port location l r# TBRI-PT
TBRI-PT WRN test port location sh r# TBRI-PT