Field
Description
number is extracted.
Possible values:
•
(default value): Extracts the number from the first
part of the address. If this fails, the number is extracted from
the second part of the address.
•
?J3 /?
: In some applications (especially in DDI con-
nections) the target address of a SIP call needs to be extrac-
ted from the Request URI. By activating this option the ad-
dress is preferably read from this field of the invite.
Check Source IP
As a response to a DNS SRV request, your SIP provider trans-
mits the addresses of valid registration servers. If you activate
this option, each SIP invite has its source IP checked against
these valid addresses. If it does not originate from one of them,
the invite is ignored. The option is not active per default.
TLS certificate check
Only for DDI / SIP trunk connections. If a connection is encryp-
ted using TLS (Transport Layer Security) a validity check on the
server certificate of the remote station is performed. The option
is not active per default.
Fields in the Trunk Settings menu.
Field
Description
SIP Header Field:
FROM Display
Not for Trunk Mode =
:11
The sender ID is placed in the "Display" field of the SIP header.
Possible values:
•
9
(default value): The sender ID is not sent.
•
/
: The user-configured user name is displayed.
•
%++ ,
: The user-configured number the called
party is displayed.
•
&++ 937
: The actual phone number from which the
calls is initiated (e.g. for billing purposes) is displayed.
SIP Header Field:
FROM User
Not for Trunk Mode =
:11
The sender ID is sent in the "User" field of the SIP header.
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