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TBRI-BD (TN2185 ISDN Trunk-Side BRI)
Issue 1 May 2002
8-1549
555-233-143
8
TBRI-BD (TN2185
ISDN Trunk-Side BRI)
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.
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’s Name (in
Alarm Log)
Alarm Level
Initial SAT Command to
Run
1
1.
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).
Full Name of MO
TBRI-BD
MINOR
test board UUCSS l r#
TBRI-BD
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...