Aastra Telecom C53I manual Explicit MWI Subscription Period, Send MAC Address in Register Message

IP Phone Administrator Guide Administrator Level Options

Administrator Options

•Explicit MWI Subscription Period

The requested duration, in seconds, before the MWI subscription times out. The phone re-subscribes to MWI before the subscription period ends.

•Send MAC Address in REGISTER Message

Adds an "Aastra-Mac:" header to the SIP REGISTER messages sent from the phone to the call server, where the value is the MAC address of the phone.

•Send Line Number in REGISTER Message

Adds an "Aastra-Line:" header to the SIP REGISTER messages sent from the phone to the call server, where the value is the line number that is being registered.

•Session Timer

The time, in seconds, that the IP phone uses to send periodic re-INVITErequests to keep a session alive. The proxy uses these re-INVITErequests to maintain the status' of the connected sessions. See RFC4028 for details. Default is 0.

•Timer 1 and Timer 2

The time, in milliseconds, that applies to an IP phone session. These timers are SIP transaction layer timers defined in RFC 3261. Timer 1 is an estimate of the round-trip time (RTT). Timer 2 represents the amount of time a non-INVITE server transaction takes to respond to a request.

•Transaction timer The amount of time, in

milliseconds that the phone allows the callserver (registrar/proxy) to respond to SIP messages that it sends. If the phone does not receive a response in the amount of time designated for this parameter, the phone assumes the message has timed out. Valid values are 4000 to 64000. Default is 4000.

•Transport Protocol

The protocol that the RTP port on the IP phone uses to send out RTP packets. Valid values are 0 (both), 1 (UDP), or 2 (TCP). Default is 1 (UDP).

•Registration Failed Retry Timer

Specifies the time, in seconds, that the phone waits between registration attempts when a registration is rejected by the registrar.

•Registration Timeout Retry Timer

Specifies the length of time, in seconds, that the phone waits until it re-attempts to register after a REGISTER message times out.

3-18 41-001160-00, Rev 01 Release 2.0