Grandstream Networks UCM6100 Series User Manual page 141

By default, the UCM6100 will route the media steams from SIP endpoints through
itself. If enabled, the PBX will attempt to negotiate with the endpoints to route the
Can Direct Media
media stream directly. It is not always possible for the UCM6100 to negotiate
endpoint-to-endpoint media routing. The default setting is "No".
Select DTMF mode for the user to send DTMF. The default setting is "RFC2833". If
"Info" is selected, SIP INFO message will be used. If "Inband" is selected, 64-kbit
DTMF Mode
PCMU and PCMA are required. When "Auto" is selected, RFC2833 will be used if
offered, otherwise "Inband" will be used.
If the phone has an assigned PSTN telephone number, this field should be set to
"User=Phone". "User=Phone" parameter will be attached to the Request-Line and
TEL URI
"TO" header in the SIP request to indicate the E.164 number. If set to "Enable", "Tel"
will be used instead of "SIP" in the SIP request.
When present in an INVITE request, the alert-Info header field specifies and
Alert-Info
alternative ring tone to the UAS.
Enable T.38
Enable or disable T.38 UDPTL support.
UDPTL
SRTP Enable SRTP for the call. The default setting is disabled.
Select Fax mode. The default setting is "None".
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Fax Mode
Fax To Email
This option controls how the extension can be used on devices within different types
of network. The default setting is "Allow All".
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Strategy
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Select audio and video codec for the extension. The available codecs are: PCMU,
Codec Preference PCMA, GSM, AAL2-G.726-32, G,726, G.722, G.729, G.723, iLBC, ADPCM, H.264,
H.265, H.263, H.263p, RTX and VP8.
None: Disable Fax.
Fax Detect: Fax signal from the user/trunk during the call can be detected and
the received Fax will be sent to the Email address configured for this extension.
If no Email address can be found for the user, the Fax will be sent to the default
Email address configured in Fax setting page under Web GUI→Call
Features→Fax/T.38.
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Yes – Allow Fax to Email for this extension. Faxes will be sent to the user's
email address configured in the extension's Basic Settings.
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No – Do not send any faxes to the user's email address configured in the
extension's Basic Settings.
Allow All
Device in any network can register this extension.
Local Subnet Only
Only the user in specific subnet can register this extension. Up to three subnet
addresses can be specified.
A Specific IP Address
Only the device on the specific IP address can register this extension.
UCM6100 Series User Manual
Version 1.0.18.13
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