Avaya S8700 Maintenance Manual page 82

Alarms, Errors, and Troubleshooting
Special Procedures
The following circuit packs require special procedures. (TBP -- cross reference)
TN2312 IP Server Interface (IPSI) providing:
— Packet Interface circuit (equivalent to TN1655)
— Tone-Clock circuit (equivalent to TN2182)
TN768, TN780, or TN2182B Tone-Clock for an EPN without an IPSI
TN570 Expansion Interface
TN573 Switch Node Interface
TN572 Switch Node Clock
DS1 CONV
4-8 Issue 1 May 2002 555-233-143