S-Series IP PBX Administrator Guide
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3) Advanced
Table 5-12 VoIP Trunk Configuration Parameters - Advanced
VoIP Settings
Qualify
Enable this to send SIP OPTIONS packet to SIP device to check if
the device is up.
Transport
Set the transport method used by the trunk.
T.38 Support
Whether to enable T.38 fax for the trunk.
DTMF Mode
Set the default mode for sending DTMF tones.
RFC4733: DTMF will be carried in the RTP stream in
different RTP packets than the audio signal
Info: DTMF will be carried in the SIP Info messages
Inband: DTMF will be carried in the audio signal
Auto: will attempt to detect if the device supports RFC4733
DTMF. If so, it will choose RFC4733; if not, it will choose
Inband.
RFC4733 is the default mode.
Other Settings
Enable DNIS
Dialed Number Identification Service is a telephone service that
enables a company to identify which telephone number was dialed.
Users could configure DNIS to allow the IP phones to display which
trunk is passing the call.
DID Number
This number is used to identify which line of the trunk is passing the
call.
DNIS Name
A name for this DNIS, when a call reaches the selected trunk, the
name will be displayed on the ringing phone.
Send Privacy ID
Check this checkbox to send privacy ID.
4) DOD
DOD (Direct Outward Dialing) means the caller ID displayed when dialing out. Before configuring
this, please make sure the provider supports this feature.
Global DOD
Configure Global direct outward dialing number. DOD (Direct Outward Dialing) is the caller
ID displayed when dialing out. Before configuring this, please make sure the carrier supports
this feature.
Add One DOD with Multiple Extensions
Enter one DOD number and select multiple extensions.