Table 33: Sip Extension Configuration Parameters - Features - Grandstream Networks UCM6510 User Manual

Enable Keep-­alive
Keep-­alive Frequency
TEL URI
SRTP
Fax Mode
Strategy
Codec Preference
Call Transfer
Call Forward Unconditional
Firmware Version 1.0.2.5
No: Normal IP-­based peers matching and authentication of incoming
•
INVITE.
The default setting is "Port".
If enabled, empty SDP packet will be sent to the SIP server periodically to
keep the NAT port open. The default setting is "Yes".
Configure the Keep-­alive interval (in seconds) to check if the host is up.
The default setting is 60 seconds.
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.
Enable SRTP for the call. The default setting is disabled.
Select Fax mode. 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.
This option controls how the extension can be used on devices within
different types of network.
Allow A ll
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 A ddress
Only the device on the specific IP address can register this extension.
The default setting is "Allow A ll".
Select audio and video codec for the extension. The available codecs are:
PCMU, PCMA, GSM, AAL2-­G.726-­32, G,726, G.722, G.729, G.723,
ILBC, A DPCM, H.264, H.263 and H.263p.
Table 33: SIP Extension Configuration Parameters – Features
Configure the Call Forward Unconditional target number. If not
UCM6510 IP PBX User Manual Page 115 of 317