Matrix Telecom SARVAM UMG System Manual page 510

DTMF
• Click DTMF.
• Select the appropriate DTMF sending / receiving mechanism that is compatible with the DTMF
sending/ receiving mechanism of your ITSP or remote peer.
• SARVAM UMG supports:
• In-band: System will send and detect digits in In-band only.
• Outband: System will send and detect digits in Outband events only.
• SIP INFO: System will send and detect digits in SIP INFO message only.
• Outband-->In-band: System will send and detect digits in Outband, if negotiated in offer / answer
else it will use In-band.
• SIP INFO-->In-band: System will send and detect digits in SIP INFO, if negotiated in offer / answer
else it will use In-band.
• Outband-->SIP INFO-->In-band: System will send and detect digits in Outband or SIP INFO, if
negotiated in offer / answer else it will use In-band. If both Outband and SIP INFO are negotiated,
Outband will have priority over SIP INFO.
• SIP INFO-->Outband-->In-band: System will send and detect digits in SIP INFO or Outband, if
negotiated in offer / answer else it will use In-band. If both SIP INFO and Outband are negotiated,
SIP INFO will have priority over Outband.
Default: Outband.
FAX
• Click FAX.
• Select the Use FAX Protocol configured for Outgoing FAX check box, if you want SARVAM UMG to
use the Fax Protocol configured for outgoing fax for this SIP Trunk and not the one that is received in
RE- INVITE message from the remote end. Default: Disabled.
Matrix SARVAM UMG System Manual 504