Nortel Networks 311 사용자 설명서
Functional description
321
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.
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.
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.
sends a message to the system software to indicate successful transmission
of the CND data.
Eight modems can be associated with each module.
shows time slot mapping for the CLASS modem card.
Table 129
Time slot mapping
Time slot mapping
XCMC mapping of TNs
TNs
DS30X
timeslot
Modem units on the CLASS
Modem card
00
01
02
03
01
02
03
00
01
02
03
01
02
03
module 0,
00
01
02
03
01
02
03
04
05
06
07
05
06
07
04
05
06
07
05
06
07
04
05
06
07
05
06
07
08
09
10
11
09
10
11
08
09
10
11
09
10
11
module 1,
00
01
02
03
01
02
03
12
13
14
15
13
14
15
12
13
14
15
13
14
15
04
05
06
07
05
06
07
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.