Phoenix Audio Spider MT505 SIP Administraor Guide - Manual (Page 10)

The Voice Over IP menu controls most the SIP protocol parameters. It includes the following sub-menus:
Signaling Protocols, Dialing, Media Streaming, Voice, Line Settings, Services, and Volume Settings. The
table below details the parameters available under the VOIP submenu and their meaning. In most cases
the user can use the default configuration file as provided without changing any of the parameters in
this menu. In some cases these parameters should be set differently. Please consult your service carrier
or our tech support team.
Parameter
Description
4.1.4.1 Voice Over IP -> Signaling Protocols
Voice Over IP -> Signaling Protocols -> SIP General
SIP Transport Protocol Determines the transport layer for outgoing SIP calls initiated
by the phone.
 UDP (default)
 TCP
SIP Local Port Defines the local SIP port (UDP or TCP) for SIP messages.
The valid range is 1024 to 65535. The default value is 5060.
Gateway Name Assigns a name to the phone. The name is used as the host
part of the SIP URI in the From header.
Notes:
 Ensure that the name you choose is the one with which
the Proxy is configured to identify the phone.
 If not specified, the phone's IP address is used (default).
PRACK Mode Determines whether the phone sends PRACK (Provisional
Acknowledgment) messages upon receipt of 1xx SIP reliable
responses.
 Disable
 Enable (default)
Enable RPORT Determines whether the phone adds the ‘rport’ parameter to
the relevant SIP message (in the SIP Via header).
 Disable (default)
 Enable
Include PTIME in SDP Determines whether the phone adds the PTIME parameter to
the SDP message body.
 Disable (default)
 Enable
Enable Keep Alive using OPTIONS Determines whether keep-alive is performed using SIP
OPTIONS messages sent to the Proxy.
 Disable (default)
 Enable
Keep Alive Period Defines the Proxy keep-alive time interval (in seconds)
between Keep-Alive messages.
The valid range is 0 to 86400. The default value is 300.