User guide

Common VoIP attributes: QoS, Media and DTMF-Relay VoIP DTMF-RELAY command reference
iMG/RG Software Reference Manual (Voice Service)
6-132
Example --> voip dtmf-relay show
Gateway DTMF-Relay:
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Mode: out-of-band
Telephone-event final packets: 2
Telephone-event time: rfc2833
Telephone-event Payload Type: default