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ASAI and Call Control
Issue 7 May 1998
4-71
Third Party Send DTMF Signals
Starting with G3V4, this controlling capability is used by the adjunct to transmit a
sequence of DTMF tones on behalf of a party on the call.
Information Flow
The adjunct expects a response to its request.
The ECS either:
— Transmits the tones on the call after it has validated the parameters, or
— Denies the request if it is unable to service it
Third Party Send DTMF Signals Parameters
ACK (Positive Acknowledgement) Parameters
An acknowledgement is sent when it is determined that the DTMF digits could be
transmitted, not when done transmitting. There are no parameters contained in
this ACK.
tx_party_id [mandatory] Identifies the party on whose behalf the DTMF
signals are to be sent. This party must map to a valid,
physical endpoint on the call.
rx_party_id [optional] If present, this parameter is ignored. A list of up to
5 party_ids that will receive the DTMF signals. If this list is
null, then all parties on the call receive the DTMF signals if
otherwise eligible (that is, if they are connected via ports that
support end-to-end signaling). See ‘‘Considerations’’ on
page 4-73.
char_seq [mandatory] Identifies the character sequence to be
generated (maximum 32).
tone_dur [optional] Specifies in .01 second increments, the duration of
each tone. The default duration is .35 seconds (350
milliseconds). Valid range of values accepted by the ECS for
this parameter is from 6 to 35 seconds (0.6 to 0.35 seconds).
pause_dur [optional] Specifies in .01 second increments, the duration of
the pause in between tones. The default duration is .10
seconds (100 milliseconds). Valid range of values accepted
by the ECS for this parameter is from 4 to 10 seconds
(0.04 to 0.10 seconds).