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SIP Operation Manual
Support URI Percent-Encoding (RFC 3986): It follows RFC 3986 to encode/decode the
letters of the basic Latin alphabet, digits, and a few special characters.
Compare SIP 'To' Header for Transit Out: When FXO is called and the number of
Request line and “To” is different, FXO will use the number of “To” to dial out. Please
consult your Internet Telephony Service Provider about the format of invite packet from
Proxy.
E.164
This is optional. E.164 is to replace number that you dial out into [country code]+[area code] +
[destination number]. This is done automatically by VoIP gateway without changing user dialing
habit. If your VSP accept only E.164 numbering rule in SIP invite. You will have to fill information in
the current VoIP gateway according to the dialing habit. These information are, what will user dial
when he tries to make international call? What is the country code of the VoIP gateway? What will
user dial when he wants to dial long distance call? What is the local area code? If all information
are filled, the dial out invite will be changed from [destination number] to [country code]+[area
code]+[destination number].
International Call Prefix Digit: Dial out prefix for international calls. These prefixes will be
scanned for further process if “E.164 Numbering” is enabled.
Country Code: Select the desired country code where the gateway is located.
Long Distance Call prefix Digit: It is used for making a long-distance call.
Area Code: Local area code where the gateway is located.
E.164 Numbering
To Invite Proxy:
Invite Proxy to follow the E.164 rule.
Transform To Transit Out:
The call from FXO to PSTN follows the E.164 rule. It applies
to one-stage dialing.
ENUM Header Exception: Do not change the prefix.
NOTE: All settings in this section are specific to your VoIP network. Please ask your Internet Telephony
Service Provider whether or not they require these settings.
