Instruction manual

Page 1366 of 3156 Dual Signaling on Analog Trunks
553-3001-306 Standard 10.00 January 2002
Prior to the introduction of Dual Signaling on Analog Trunks, a similar
functionality was available when trunks were programmed for DTMF
signaling. Dial Pulse calls, if received, were analyzed and handled by the
Tone and Digit Switch or Extended Conference and Tone Service card. A
DTR was reserved, needlessly, for the duration of the signaling.
The following diagram shows one application of the feature.
This feature enables a trunk to be configured in one of the following ways:
• incoming Dial Pulse - outgoing Dial Pulse
• incoming DTMF - outgoing DTMF
• incoming Dial Pulse - outgoing DTMF
• incoming DTMF - outgoing Dial Pulse
Operating parameters
The new Classes of Service (DPDT and DTDP) are mutually exclusive with
DIP, DTN, MFC, MFE, MFK, MFR and MFX.
Figure 38
Meridian 1 connected to the C.O. through analog trunks interface
PSTN
Dial Pulse
Meridian 1
Digitone