Avaya Nortel Communication Server 1000 Reference page 247

Once all of the CND information is 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.
page 247 shows time slot mapping for the CLASS modem card.
Table 100: Time slot mapping
XCMC mapping of TNs
TNs
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Circuit Card Reference
DS30X timeslot Modem units on the CLASS Modem card
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Functional description
Table 100: Time slot mapping
module 0, 00
01
02
03
04
05
06
07
module 1, 00
01
02
03
04
05
06
07
module 2, 00
01
02
03
04
05
06
07
module 3, 00
01
02
03
on
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