Specifications

Circuit packs, channel service units, and power supplies
238 Hardware Description and Reference for Avaya Communication Manager
The TN780 circuit pack has 2-MHz, 160-kHz, and 8-kHz clocks. The TN780 circuit pack can
transmit the system clock and tones on either TDM bus A, TDM bus B, or both.
The TN780 circuit pack is administrable to produce five tone plans. For countries outside the US
six tones can be customized in each plan. The TN780 circuit pack supports A- or Mu-Law
companding.
A TN780 circuit pack is never used with the S8100 Media Server.
TN787K multimedia interface
Note:
Note: This circuit pack is no longer sold.
The TN787 multimedia interface circuit pack is used in conjunction with the TN788 multimedia
voice conditioner circuit pack. The TN787 provides service circuit functionality for the
Multimedia Call Handling (MMCH) feature. This feature provides both voice and multimedia
data service between multimedia complex endpoints. Up to six endpoints can conference to a
single multimedia call occurrence.
The TN787 circuit pack provides a TDM-bus interface and a DS1 adjunct cable interface. The
TN787 circuit pack routes the H.221 multimedia information to the DS1 interface to free more
TDM-bus timeslots. Freeing more timeslots allows the system to carry more audio, video, and
data bit streams between multimedia complex endpoints. The TN787 circuit pack provides
support for multiple port networks (PNs).
TN788C multimedia voice conditioner
Note:
Note: This circuit pack is no longer sold.
The TN788C multimedia voice conditioner circuit pack is used in conjunction with the TN787F/G
multimedia interface circuit pack. Together, they provide service circuit functionality for the
MMCH feature. This feature provides both voice service and multimedia data service between
multimedia complex endpoints.
Note:
Note: A TN788C V1 circuit pack only supports µ-Law companding. A TN788C V2 or
later supports A- and µ-Law.