Grandstream Networks UCM6200 - Page 142

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UCM6200 Series User Manual
media routing. The default setting is "No".
DTMF Mode
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
codec PCMU and PCMA are required. When "Auto" is selected, RFC2833 will be
used if offered, otherwise "Inband" will be used.
Enable Keep-alive
If enabled, empty SDP packet will be sent to the SIP server periodically to keep the
NAT port open. The default setting is "Yes".
Keep-alive
Frequency
Configure the number of seconds for the host to be up for Keep-alive. The default
setting is 60 seconds.
TEL URI
If the end device/phone has an assigned PSTN telephone number, this field should
be set to "User=Phone". Then a "User=Phone" parameter will be attached to the
Request-Line and 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. The default setting
is disabled.
Concurrent
Registrations
The maximum endpoints which can be registered into this extension. For security
concerns, the default value is 1.
Other Settings
SRTP
Enable SRTP for the call. The default setting is "No".
Fax Mode
Select Fax mode for this user. The default setting is “None”.
 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 UI->PBX->Internal
Options->Fax/T.38.
Strategy
This option controls how the extension can be used on devices within different types
of network. The default setting is "Allow All".
 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.
Enable T.38
UDPTL
Enable or disable T.38 UDPTL Support.
Skip Trunk Auth
If enable “All”, users do not need to enter password when making an outbound call. If
enable “Follow Me”, the user can dial out via follow me without password.
Codec Preference
Select audio and video codec for the extension. The available codecs are: PCMU,