Huawei EchoLife ET323 User Manual page 51

EchoLife ET523 IP Phone User Manual
Field
SIP Registration
Unregister on
Reboot
Register
Expiration
Local SIP Port
SIP Registration
Failure Retry
Wait Time
SIP T1 Timeout
SIP T2 Interval
SIP Transport
Use RFC3581
Symmetric
Routing
NAT Traversal
(STUN)
Description
This parameter controls the sending of register messages to the
proxy server. The default setting is Yes.
The default value is No. If it is set to Yes, the SIP user' s
registration information will be cleared on reboot. The " *"will
be sent in the SIP header to request bidding removal. Some
servers do not support this function.
This parameter allows users to specify the time frequency (in
minutes) that the ET523 refreshes its registration. The default
interval is 60 minutes. The maximum interval is 65,535 minutes
(about 45 days); the minimum expiration is 5 minutes.
This parameter defines the local SIP port used to listen and
transmit. The default value for Account 1, Account 2, Account 3
and Account 4 is 5060, 5062, 5064 and 5066 respectively.
The default value is 20 seconds. Configure the option to allow
resending registration packet once the registration fails due to
multiple possible reasons.
The default value is 1 second.
The default value is 4 seconds.
Select the SIP transport either through UDP or TCP. The default
value is UDP.
The default value is No. If it is set to Yes, RFC3581 symmetric
routing will be used.
This parameter activates the NAT traversal mechanism. When
you enable it by selecting Yes, and a STUN server is also
specified, the phone will work according to the STUN client
specifications.
In 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 you select No, but send keep-alive, the
ET523 will periodically (every 20 seconds) send a blank UDP
packet (with no payload data) to the SIP server to keep the
" hole"on the NAT open.
If the outbound proxy is used, this parameter should be set to No.
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4 Configuration Guide