Tbri-Bd; Isdn Trunk-Side Bri) - Avaya S8700 Maintenance Manual

For multi-connect configurations

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TBRI-BD (TN2185 ISDN Trunk-Side BRI)

TBRI-BD (TN2185

MO's Name (in

TBRI-BD

Where UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC), C is the

carrier designation (A, B, C, D, or E), SS is the carrier slot address where the circuit pack

resides (01–21), and pp is the 2-digit port number (1, 2, 3, and so forth).

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-switched or packet-switched. Packet switching uses

the PPE to combine every D channel 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.

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.

Initial SAT Command to

test board UUCSS l r#

Full Name of MO

Issue 1 May 2002