1118 The TDS/DTR card
Tone detector
The TDS/DTR card provides eight channels of DTMF (Dual Tone
Multi-Frequency) detection in A-Law or µ-Law.
In North America, pre-programmed data is configured for µ-Law tone
detection.
SDI function
The TDS/DTR card provides two SDI (Serial Data Interface) ports.
Refer to "SDI ports" in Communication Server 1000M and Meridian 1 Large
System Planning and Engineering (NN43021-220) for more information.
Tones and cadences
The following tablesgive the tones and cadences provided by the NTAK03
TDS/DTR card.
Table457
NTAK03,NTDK20, and NTDK97 Mu-Law tones and cadence
Tone # Frequency
(Hz) dB below
overload
Precision
Ringing
Tones DTMF
Digits MF Digits
1350/440 -23/-23 ÷
2* (533 + 666) x 10 -23/-23 ÷
3 440 -23 ÷
4350/440 -19/-19 ÷
5440/480 -25/-25 ÷
6 480 -23 ÷
7480/620 -30/-30 ÷
8 1020 -16 ÷
9 600 -23 ÷
10 600 -16 ÷
11 440/480 -22/-22 ÷
12 350/480 -23/-23 ÷
13 440/620 -24/-24 ÷
14 940/1630 -12/-10 P
15 700/1210 -12/-10 1
16 700/1340 -12/-10 2
17 700/1480 -12/-10 3
18 770/1210 -12/-10 4
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.