Nortel Circuit Card 311 Reference page 319

System software then sends the CND information to the CLASS Modem
card, one byte at a time, where it is stored in the message buffer. If the
CLASS Modem card receives more bytes than were specified in the
initiating message, then the additional bytes are discarded and not included
in the CND memory buffer.
Once all of the CND information has been stored in the memory buffer, the
CLASS Modem card begins transmission when requested by the system
software. Data is sent one ASCII character at a time. The CLASS Modem
card inserts a start and stop bit to each ASCII character sent.
The transmission of the calling party name/number to the terminating
telephone is accomplished through asynchronous FSK simplex-mode
transmission at 1200 bits/second over a 2-wire loop, in accordance with the
Bell 202 standard. The transmission is implemented by the appropriate
PCM equivalent of 1200 or 2200 Hz.
Upon completion of transmitting the CND data, the CLASS Modem card
sends a message to the system software to indicate successful transmission
of the CND data.
Eight modems can be associated with each module.
mapping" (page 319)
Table 128
Time slot mapping
Copyright © 2003-2008, Nortel Networks
.
shows time slot mapping for the CLASS modem card.
XCMC mapping of TNs
DS30X
TNs timeslot
00 00
01 01
02 02
03 03
04 04
05 05
06 06
07 07
08 08
09 09
10 10
11 11
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Functional description 319
Table 128 "Time slot
Modem units on the CLASS
Modem card
module 0, 00
01
02
03
04
05
06
07
module 1,
00
01
02
03