Grandstream Networks UCM6102 User Manual page 100

Ring Timeout
Auto Record
Skip Voicemail Password
Verification
SIP Settings
NAT
Can Reinvite
DTMF Mode
Insecure
Firmware Version 1.0.7.11

Enter a password to be used on all the extensions in the batch.
Configure the number of seconds to ring the user before the call is
forwarded to voicemail (voicemail is enabled) or hang up (voicemail is
disabled). If not specified, the default ring timeout is 60 seconds on the
UCM6100, which can be configured in the global ring timeout setting
under web GUI->Internal Options->IVR Prompt: General Preference.
The valid range is between 5 seconds and 600 seconds.
Note:
If the end point also has a ring timeout configured, the actual ring timeout
used is the shortest time set by either device.
Enable automatic recording for the calls using this extension. The default
setting is disabled. The recording files can be accessed under web GUI-
>CDR->Recording Files.
When user dials voicemail code, the password verification IVR is
skipped. If enabled, this would allow one-button voicemail access. By
default this option is disabled.
Use NAT when the PBX is on a public IP communicating with devices
hidden behind NAT (e.g., broadband router). If there is one-way audio
issue, usually it's related to NAT configuration or Firewall's support of SIP
and RTP ports. The default setting is enabled.
By default, the PBX will route the media steams from SIP endpoints
through itself. If enabled, the PBX will attempt to negotiate with the
endpoints to route the media stream directly. It is not always possible for
the PBX 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 codec PCMU and PCMA are required. When
"Auto" is selected, RFC2833 will be used if offered, otherwise "Inband"
will be used.

Port: Allow peers matching by IP address without matching port
number.

Very: Allow peers matching by IP address without matching port
number. Also, authentication of incoming INVITE messages is not
required.

No: Normal IP-based peers matching and authentication of incoming
INVITE.
The default setting is "Port".
UCM6100 Series IP PBX User Manual Page 98 of 233