InnoMedia MTA8000 Series Administrative Guide
Page 24
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Figure 19. SIP Server Settings
–
SIP Option
Field Name
Description
100rel Support
Enable 100rel response support.
Enable Switching
Proxy in Response
to DNS SRV Priority
Change
When this item is enabled, whenever the
MTA is ready to send a REGISTER request
and the SRV TTL has expired, it performs an
SRV query and the MTA will switch to the
most preferred SIP server (lowest priority) in
the SRV query response.
If this item is disabled, the MTA stays with
the currently registered SIP proxy and only
saves the SRV query results. However, if the
current SIP proxy is unreachable, or the MTA
reboots and starts a new DNS query process,
the MTA will then register to the most
preferred SIP server (lowest priority) in the
SRV query response.
Disable rport
Support
Do not append rport (response port
number) in the Via header.
Using SIP Notify for
Flashhook Support
Send a SIP NOTIFY hook flash event message
during the call when a hook flash is
detected.
Using SIP Info for
Flashhook Support
Send a SIP INFO hook-flash event message
during the call when a hook flash is
detected.
SIP Short Header
Support
Send SIP Headers in short format (compact
form) to reduce message packet size.
Enable Re-
registration
Credential
Enable Re-registrations to carry the previous
successful authentication credentials.
OutOfBand DTMF
by SIP
Use SIP INFO to send DTMF.
RFC2833 DTMF
Use RFC2833 for sending DTMF digits.
Available options:
•
Negotiated
–
MTA and SIP Server
negotiate if RFC2833 is enabled or not.
•
Always off
–
RFC2833 is never used.
•
Always on
–
RFC2833 is always used.
Send UA Header
Allow MTA to send User-Agent Header in SIP
message.
