NEC SP5008A - Manual (Page 22)

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Session Refresh Request message.
Unregister All Send SIP unregister signaling message after the
SP5008A / SP5018A / SP5058A has been restarted
Early media Treatment Use early media treatment SIP protocol, where SIP
invite messages will not include SDP.
Support SIP Ping Special feature used with only Nortel’s SIP proxy.
IP Anonymous Caller ID When this feature is Enabled, all IP outgoing calls’
Caller ID will not be displayed to the destination.(Please
make sure your proxy server or soft switch
supports the feature, if the proxy does not support
it and you enable this feature, all IP outgoing calls
will be dropped.)
When Disabled, all IP outgoing calls’ Caller ID will be
displayed to the destination.
Support Message Waiting Indication
(MWI)
You can Enable or Disable the MWI function.( This
feature is for FXS only)
SIP Message Resend Timer Base (sec) Specify the resend time in seconds for each SIP request
message that has not received a response.
Max. Response Time for Invite
(1~30sec)
Specify the timeout period for SIP Invite messages.
For example, if the timeout period is 10 seconds, when
the SP5008A / SP5018A / SP5058A sends an Invite
message and does not receive a response within 10
seconds, it will cancel the call.
1. Press the “Apply” button (at the bottom) after you finish to save changes.
2. Press the “Reboot” button to apply the changes.