Grandstream UCM6100 User Manual for 1.0.9.25 - Manual (Page 159)

Firmware Version 1.0.9.25 UCM6100 Series IP PBX User Manual Page 158 of 303
Settings->ToS.
• RFC2833: Send DTMF using RFC2833.
• Info: Send DTMF using SIP INFO message.
• Inband: Send DTMF using inband audio. This requires 64 bit codec,
i.e., PCMU and PCMA.
• Auto: Send DTMF using RFC2833 if offered. Otherwise, inband will
be used.
Enable Qualify
If enabled, the UCM6100 will regularly send SIP OPTIONS to the device
to check if the device is still online. The default setting is "No".
Qualify Timeout
When "Enable Qualify" option is set to "Yes", configure the timeout (in ms)
for the Qualify SIP message. If no response is received within the timeout,
the device is considered offline. The default setting is 1000ms.
Qualify Frequency
When "Enable Qualify" option is set to "Yes", configure the interval (in
seconds) of the SIP OPTIONS message sent to the device to check if the
device is still online. The default setting is 60 seconds.
Maximum Number of Call Lines
The maximum number of concurrent calls using the trunk. The default
settings 0, which means no limite.
Fax Mode
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.
SRTP Enable SRTP for the VoIP trunk. The default setting is "No".
Sync LDAP Enable
If enabled, the local UCM6100 will automatically provide and update the
local LDAP contacts to the remote UCM6100 SIP peer trunk. In order to
ensure successful synchronization, the remote UCM6100 peer also
needs to enable this option on the SIP peer trunk. The default setting is
"No".
Sync LDAP Password
This is the password used for LDAP contact file encryption and decryption
during the LDAP sync process. The password must be the same on both
UCM6100 peers o ensure successful synchronization.
Sync LDAP Port
Configure the TCP port used LDAP sync feature between two peer
UCM6100.
LDAP Outbound Rule
Specify an outbound rule for LDAP sync feature. The UCM6100 will
automatically modify the remote contacts by adding prefix parsed from
this rule.
LDAP Dialed Prefix Specify the prefix for LDAP sync feature. The UCM6100 will automatically