Grandstream Networks GXP11O5

Grandstream Networks, Inc. GXP1100/1105 User Manual Page 26 of 34

Firmware version: 1.0.1.110 Last Updated: 01/2012

Register Expiration This parameter allows user to specify the time frequency (in minutes) that

GXP1100/1105 refreshes its registration with the specified registrar. The default

interval is 60 minutes. The maximum interval is 65,535 minutes (about 45 days).

Reregister Before

Expiration This parameter allows user to specify the time frequency (in seconds) that

GXP1100/1105 sends out a re-registration request before the Register Expiration.

By default is 0 second.

Local SIP Port This parameter defines the local SIP port used to listen and transmit. The default

value for Account 1 is 5060.

SIP Registration Failure

Retry Wait Time Retry registration if the process failed. Default is 20 seconds.

SIP T1 Timeout RFC 3261 SIP T1 timer. Default is 0.5 second.

SIP T2 Interval RFC 3261 SIP T2 timer. Default is 4 seconds.

SIP Transport Choose SIP Transport between UDP, TCP and TLS/TCP. Default is UDP.

SIP URI Scheme when

using TLS When TLS/TCP is used (in “SIP Transport”), select “sip:” or “sips:” in this mode.

Default is “sips:”.

Use Actual Ephemeral

Port in Contact with

TCP/TLS

Enable to use actual ephemeral port in contact with TCP/TLS. Default is “No”.

Check Domain

Certificate Enable to check the domain certificate. Default is “No”.

Remove OBP from

Route The SIP Extension notifies the SIP server that it is behind a NAT/firewall.

Validate Incoming

Messages This configuration selects whether or not the incoming messages should be

validated.

Support SIP Instance ID Selects whether or not SIP Instance ID is supported.

NAT Traversal This parameter activates the NAT traversal mechanism. It has options: No, STUN,

Keep-Alive, UPnP, Auto, VPN.

If selecting STUN and a STUN server is also specified, the phone performs

according to the STUN client specification. Using this mode, the embedded STUN

client detects if and what type of NAT/Firewall configuration is used. If the detected

NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the phone will use

its mapped public IP address and port in all of its SIP and SDP messages.

If selecting Keep-

live with no specified STUN server, the GXP1100/1105 will

periodically (every 20 seconds or so) send a blank UDP packet (with no payload

data) to the SIP server to keep the “hole” on the NAT open.

SUBSCRIBE for MWI Default is “No”. When set to “Yes” a SUBSCRIBE for Message Waiting Indication

will be sent periodically.