Grandstream Networks HT812 Administration Manual page 46

Proxy-Require
Use NAT IP
Use SIP User Agent Header
Distinctive Ring Tone
Disable Call Waiting
Disable Call Waiting Caller ID
Disable Call Waiting Tone
Disable Connected Line ID
Disable Receiver Off hook
Tone
Determines a SIP Extension to notify the SIP server that the HT812/HT814 is
behind a NAT/Firewall.
Defines NAT IP address used in SIP/SDP messages. It should only be used
if required by ITSP.
Configures the SIP User-Agent Header.
Customizes the Ring Tone 1 to 3 with associate caller ID: when selected, if
caller ID is configured, then the device will ONLY use this ring tone when the
incoming call is from the Caller ID. System Ring Tone is used for all other
calls. When selected but no Caller ID is configured, the selected ring tone will
be used for all incoming calls using the FXS port. Distinctive ring tones can
be configured not only for matching a whole number, but also for matching
prefixes. In this case symbol * (star) will be used.
For example: if configured as *617, Ring Tone 1 will be used in case of call
arrived from the area code 617. Any other incoming call will ring using
cadence defined in parameter System Ring Cadence located under
Advanced Settings Configuration page.
Note: If server supports Alert-Info header and standard ring tone set
(Bellcore) or distinctive ring tone 1-10 is specified, then the ring tone in the
Alert-Info header from server will be used. Bellcore rings and tones are
independent from custom ring tones.
The custom ring tones can also be specified by alert-info header, for example
Alert-Info: ;info=ring5
Disables receiving a second incoming call when the line is engaged. Default
is No.
Disables displaying caller ID when receiving a second incoming call. Default
is No.
Disables playing call waiting tone during active call when receiving a second
incoming call. The CWCID will still be displayed. Default is No.
Disables displaying the number of the person answering the phone.
Default is No.
Enables / disables the warning to alert that the phone has been left off-hook
for an extended period of time.
Default is No.
HT812/HT814 Administration Guide
Version 1.0.9.3
P a g e | 45