Tls

Reregister Before Expiration

Local SIP Port

SIP Registration Failure Retry Wait Time

SIP T1 Timeout

SIP T2 interval

SIP Transport

SIP URI Scheme when using

Use Actual Ephemeral Port in Contact with TCP/TLS

Check Domain Certificates

Remove OBP from route

Validate Incoming Messages

Support SIP Instance ID

NAT Traversal

notify the server to unbind the connection. The default setting is "No".

Specifies the frequency (in minutes) in which the phone refreshes its registration with the specified registrar. The default value is 60 minutes. The maximum value is 64800 minutes (about 45 days).

Specifies the time frequency (in seconds) that the phone sendsre-registration request before the Register Expiration. The default value is 0.

Defines the local SIP port used to listen and transmit. The default value is 5060 for Account 1 and 5062 for Account 2.

Specifies the interval to retry registration if the process is failed. The default value is 20 seconds.

SIP T1 Timeout. The default setting is 0.5 seconds.

SIP T2 Interval. The default setting is 4 seconds.

Determines the network protocol used for the SIP transport. Users can choose from TCP, UDP and TLS.

Specifies if "sip:" or "sips:" will be used when TLS/TCP is selected for SIP Transport. The default setting is "sips:".

Defines whether the actual ephemeral port in contact with TCP/TLS will be used or not. This is used when TLS/TCP is selected for SIP Transfer. The default setting is "No".

Defines whether the domain certificates will be checked or not when TLS/TCP is used for SIP Transport. The default setting is "No".

Configures to remove outbound proxy from route. This is used for the SIP Extension to notify the SIP server that the device is behind a NAT/Firewall.

Defines whether the incoming messages will be validated or not. The default setting is "No".

Defines whether SIP Instance ID is supported or not. The default setting is "Yes".

This parameter configures whether the NAT traversal mechanism is activated. Users could select the mechanism from No, STUN, Keep-Alive, UPnP, Auto or VPN. If set to "STUN" and STUN server is configured, the phone will route according to the STUN server. If NAT type is Full Cone, Restricted Cone or Port-Restricted Cone, the phone will try to use public IP addresses and port number in all the SIP&SDP messages. The phone will send empty SDP packet to the SIP server periodically to keep the NAT port open if it is configured to be

FIRMWARE VERSION 1.0.4.23

GXP2120/GXP2110/GXP2100/GXP1450 USER MANUAL

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