H3C Technologies H3C MSR 5600 - Manual (Page 51)

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Enabling DTMF to receive and send numbers
R2 signaling has two modes to send and receive numbers:
• MFC—The originating and terminating sides use interregister signaling to transmit and request
number information, including the calling number, line information, and billing. In the exchange
process, the terminating side sends responses to the originating side.
• DTMF—The originating side transmits the called number to the terminating side digit by digit. The
terminating side does not send any responses.
Compared with the MFC mode, the DTMF mode has a faster connection speed but transmits a smaller
amount of information.
To enable DTMF to receive and send numbers:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter E1 or T1 interface view. controller { e1 | t1 } number N/A
3. Create a timeslot set and
enable R2 signaling for it. timeslot-set ts-set-number
timeslot-list timeslots-list signal r2
By default, no timeslot set is
created.
4. Enter R2 CAS view. cas ts-set-number N/A
5. Enable DTMF to receive and
send numbers.
dtmf enable
By default, MFC mode is used.
Configure the same mode on the
originating and terminating
devices. Otherwise, call
establishment will fail.
6. Configure the delay before
sending DTMF tones.
timer dtmf-delay time
The default is 50 milliseconds.
This command takes effect only
when the dtmf enable command
has been configured.
Configuring the connection mode
There are two connection modes:
• terminal—After receiving the called number, the terminating side must wait for the real state (busy
or idle) of the called party before returning the corresponding interregister information to the
originating side.
• segment—After receiving the called number, the terminating side directly returns the "called party
idle" interregister signaling, without waiting for the real state of the terminating side. If the called
party is busy, the terminating side plays busy tones to the originating side.
To configure the connection mode:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter E1 or T1 interface view. controller { e1 | t1 } number N/A
3. Create a timeslot set and
enable R2 signaling for it. timeslot-set ts-set-number timeslot-list
timeslots-list signal r2 By default, no timeslot set is
created.
4. Enter R2 CAS view. cas ts-set-number N/A