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The TN778 interfaces the packet bus with the Switch Processing Element (SPE) and terminates LAPD links. The TN778 supports packet bus signaling for ISDN D-channel signaling for ASAI applications and for packet bus maintenance. Packet bus signaling occurs over the LAPD links and terminates (at level 2) on the packet control circuit pack. The TN778 provides a protocol processing capability to interface the SPE with the packet bus and communicates with the SPE using a message-based interface, a shared memory based interface, and a combination of these interfaces. Additional features include packet bus loop-around testing, monitoring of the packet bus to detect packet bus faults in standard reliability systems, and maintaining of signaling links during planned SPE interchanges with the duplication option.
- Availability:
- 0
- Features:
- Interfaces the packet bus with the SPE and terminates Link Access Procedure on the D-Channel (LAPD) links
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| Service | Delivered By | Transit Time | Cost |
|---|---|---|---|
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Varies | 1–5 Business Days | FREE |
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