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Avaya Definity TN778 Packet Controller (R6 and earlier).
- Interfaces the packet bus with the SPE and terminates Link Access Procedure on the D-Channel (LAPD) links
- Supports packet bus signaling for ISDN D-channel signaling for ASAI applications and for packet bus mainetenance
- Provides a protocol processing capability to interface the SPE with the packet bus
- Replaced by TN794 Network Control/Packet Interface
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