Avaya S8700 Maintenance Manual page 1684

Maintenance-Object Repair Procedures
Packet Bus Interface
When the PKT-INT module is activated, it uses the LANIS device to talk
and listen on the packet bus.
System Clock Interface
The Clock module uses the Spitfire2 device to generate clock pulses for
the backplane.
IPSI Circuit Pack Faceplate
The faceplate view of the IPSI is shown in
described in the following sections.
IPSI LEDs
There are four LEDs on an IPSI's faceplate. The top three LEDs are the standard
ones found on most TN circuit packs. The fourth LED imitates the TN2182B
Tone-Clock's amber LED. The following table describes the IPSI's LED operation.
8-962 Issue 1 May 2002
Figure 8-51 on page 8-960 and
555-233-143