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MG-BRI (BRI Trunk Media Module MM720)
Issue 1 June 2005 1589
Error Log Entries and Test to Clear Values
U Basic Rate network-side 2-wire line interface.
1 TN556B ISDN-BRI 4-Wire S/T-NT Line (A-law)
2 TN 2185 ISDN-BRI 4-Wire S Interface (Trunk Side)
3 TN2198 ISDN-BRI 2-Wire U Interface
4 TN2198 ISDN-BRI 2-Wire U Interface
5 TN 2185 ISDN-BRI 4-Wire S Interface (Trunk Side)
1. Network Termination 2 (NT2), that terminates Layer 1 and higher layers. PBXs, LANs, and
terminal controllers typically provide NT2 functionality including protocol handling and
multiplexing for Layers 2 and 3.
2. Network Termination 1 (NT1), that terminates Layer 1 and monitors maintenance,
performance, timing, power transfer, multiplexing, and multi-drop termination with contention
resolution.
Table 587: ISDN Interface Reference Point definitions (continued)
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Table 588: MG-BRI Error Log Entries and Test to Clear Values
Error
Type
Aux
Data
Associated Test Alarm
Level
On/Off
Board
Test to Clear Value
0 (a) 0 Any Any Any test board location sh r 1
1 (b
) Any None MIN ON
257 (c
) 65535 Control
Channel Loop
(#52)
MIN ON test board location r 20
513 (d
) 4352 to
4357
None ON
769 (e
) 4358
1025 (f
) NPE/NCE
Audit (#50)
None ON
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