Use STUN Set the line to use STUN for NAT traversal
Convert URI Convert not digit and alphabet characters to %hh hex code
DTMF Type Set the DTMF type to be used for the line
DTMF SIP INFO
Mode
Set the SIP INFO mode to send ‘*’ and ‘#’ or ‘10’ and ‘11’
Transportation
Protocol
Set the line to use TCP or UDP for SIP transmission
SIP Version Set the SIP version
Caller ID Header Set the Caller ID Header
Enable Strict Proxy
Enables the use of strict routing. When the phone receives packets from
the server, it will use the source IP address, not the address in via field.
Enable user=phone Sets user=phone in SIP messages.
Enable SCA Enable/Disable SCA (Shared Call Appearance )
Enable BLF List Enable/Disable BLF List
Enable DNS SRV
Set the line to use DNS SRV which will resolve the FQDN in proxy server
into a service list
Keep Alive Type
Set the line to use dummy UDP or SIP OPTION packet to keep NAT
pinhole opened
Keep Alive Interval Set the keep alive packet transmitting interval
Enable Session Timer
Set the line to enable call ending by session timer refreshment. The call
session will be ended if there is not new session timer event update
received after the timeout period
Session Timeout Set the session timer timeout period
Enable Rport Set the line to add rport in SIP headers
Enable PRACK Set the line to support PRACK SIP message
Keep Authentication Keep the authentication parameters from previous authentication
Auto TCP
Using TCP protocol to guarantee usability of transport for SIP messages
above 1500 bytes
Enable Feature Sync Feature Sycn with server
Enable GRUU Support Globally Routable User-Agent URI (GRUU)
BLF Server
The registered server will receive the subscription package from ordinary
application of BLF phone.
Please enter the BLF server, if the sever does not support subscription
package, the registered server and subscription server will be separated.
BLF List Number
BLF List allows one BLF key to monitor the status of a group. Multiple
BLF lists are supported.
SIP Encryption Enable SIP encryption such that SIP transmission will be encrypted
SIP Encryption Key Set the pass phrase for SIP encryption