|
- Line card that plugs into a single channel slot of a Total Access 750/850/1500 channel bank
- Provides an ISDN U-interface and allows the transport of Basic Rate 2B+D information over T1 carriers and twisted pair wiring
- ISDN 2B1Q interface that meets all Layer 1 requirements as specified in ANSI T1.601-1991
- 18 kft nominal range on mixed gauge wire
- Internal test pattern allows for testing of individual B Channels without requiring external test equipment
- Transportation of ISDN Basic Rate 2B+D information over T1 facilities in the 3-DS0 format specified in TR-NWT-000397
- All Layer 1 maintenance functions
- Performance monitoring of the Layer 1 facility as specified in TR-NWT-000397 and TR-TSY-000829
- Distinctive metallic DC test signature to identify either line unit LT or line unit NT mode of operation as specified in TR-NWT-000397
- Provides loopback capability for full 2B+D as well as individual B channels in both loop and carrier directions. Individual B channel loopbacks, for the NT1 and up to six devices in the Network-to-Customer direction, may be initiated via the DB-9 VT100 craft interface on the Total Access 750 BCU, Total Access 850 RCU, or the Total Access 1500 SCU, or from a remote location through the maintenance channel.
- DS0 logic level transmit and receive data access through front panel bantam jacks
- Addressing and error status with front panel LED indicators.
- Responds to OCU and CSU latching loopback in 2B, B1, and B2 modes of operation
- A front panel pushbutton allows toggling between local provisioning via DIP switches and remote provisioning via the local craft interface
|
|
