Phoenix Audio Spider MT505 SIP Administraor Guide - Manual (Page 13)

successfully registers.
If this feature is enabled and the user reboots the phone, the
phone registers to the last proxy to which it was trying to
register, and not necessarily to the primary proxy.
Note: This parameter is applicable only if the parameter
use_redundant_proxy is set to 1.
Voice Over IP -> Signaling Protocols -> SIP Timers
Retransmission Timer T1 The time interval (in msec) between the first transmission of
a SIP message and the first retransmission of the same
message (according to RFC 3261).
The valid range is 100 to 60000. The default value is 500.
Note: The time interval between subsequent retransmissions
of the same SIP message starts with SipT1Rtx and is
multiplied by two until SipT2Rtx. For example (assuming that
SipT1Rtx = 500 and SipT2Rtx = 4000):
 The first retransmission is sent after 500 msec.
 The second retransmission is sent after 1000 (2*500)
msec.
 The third retransmission is sent after 2000 (2*1000) msec.
 The fourth retransmission and subsequent
retransmissions until SIPMaxRtx are sent after 4000
(2*2000) msec.
Retransmission Timer T2 The maximum interval (in msec) between retransmissions of
SIP messages (according to RFC 3261).
The valid range is 4000 to 60000. The default value is 4000.
Note: The time interval between subsequent retransmissions
of the same SIP message starts with SipT1Rtx and is
multiplied by two until SipT2Rtx.
Retransmission Timer T4 The SIP T4 retransmission timer according to RFC 3261.
The valid range is 5000 to 60000. The default value is 5000.
Invite Timer The SIP INVITE timer according to RFC 3261.
The valid range is 0 to 65535. The default value is 32000.
4.1.4.2 Voice Over IP -> Dialing
Dialing Timeout
The duration (in seconds) of allowed inactivity between
dialed digits. When you work with a proxy, the number you
have dialed before the dialing process has timed out is sent
to the proxy as the user ID to be called. This is useful for
calling a remote party without creating a speed dial entry
(assuming the remote party is registered with the proxy).
The valid range is 0 to 10. The default value is 5.
Phone Number Length The maximum number of digits that you can dial
The valid range is 0 to 32. The default value is 15.
Dialing Complete Key Defines the Dialing Complete key.
Pressing the Dialing Complete key forces the phone to make
a call to the dialed digits even if there is no match in the dial
plan, digit map or phone book.
 Disable
 Enable (default)
The pound (#) key and the SEND key are pre-selected as