Chapter 25 Voice
AX/DX/EX/PX Series User’s Guide
421
The following table describes the labels in this screen.
Table 152 VoIP > SIP > SIP Service Provider > Add New Provider or Edit
LABEL DESCRIPTION
SIP Service Provider Selection
Service Provider Selection This field displays ADD_NEW if you are creating a new SIP service provider profile or
the SIP service provider name you are modifying.
General
SIP Service Provider Select this if you want the Zyxel Device to use this SIP provider. Clear it if you do not
want the Zyxel Device to use this SIP provider.
SIP Service Provider Name Enter the name of your SIP service provider.
SIP Local Port Enter the Zyxel Device’s listening port number, if your VoIP service provider gave you
one. Otherwise, keep the default value.
SIP Proxy Server Address Enter the IP address or domain name of the SIP server provided by your VoIP service
provider. You can use up to 95 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [
^ ], [ $ ], [ | ], [ & ], or [ ; ]. It does not matter whether the SIP server is a proxy, redirect
or register server.
SIP Proxy Server Port Enter the SIP server’s listening port number, if your VoIP service provider gave you
one. Otherwise, keep the default value.
SIP REGISTRAR Server
Address
Enter the IP address or domain name of the SIP register server, if your VoIP service
provider gave you one. Otherwise, enter the same address you entered in the SIP
Server Address field. You can use up to 95 printable characters except [ " ], [ ` ], [ ' ],
[ < ], [ > ], [ ^ ], [ $ ], [ | ], [ & ], or [ ; ].
SIP REGISTRAR Server Port Enter the SIP register server’s listening port number, if your VoIP service provider gave
you one. Otherwise, enter the same port number you entered in the SIP Server Port
field.
SIP Service Domain Enter the SIP service domain name. In the full SIP URI, this is the part after the @
symbol. You can use up to 127 printable characters except [ " ], [ ` ], [ ' ], [ < ], [ > ], [
^ ], [ $ ], [ | ], [ & ], or [ ; ].
RFC Support
PRACK (RFC 3262, Require:
100rel)
During a call session, there are two types of SIP responses used – final and
provisional. Final responses convey the result of a request and require a confirmation
response. Provisional responses only convey the request processing progress and
does not require a confirmation response, and are therefore considered unreliable.
RFC 3262 defines a mechanism to provide reliable transmission of SIP provisional
response messages, which convey information on the processing progress of the
request. This uses the option tag 100rel and the Provisional Response
ACKnowledgement (PRACK) method.
Which is, the Zyxel Device includes a SIP Require header field with the option tag
100rel in all INVITE requests. When the Zyxel Device receives a SIP response message
indicating that the phone it called is ringing, the Zyxel Device sends a PRACK
message to have both sides confirm the message is received.
Select this to have the caller require the option tag 100rel to send provisional
responses reliably.
VoIP IOP Flags – Select VoIP inter-operability settings.
Replace dial digit ‘#’ to
‘%23’ in SIP messages
Replace a dial digit “#” with “%23” in the INVITE messages.
Remove the ‘Route’ header
in SIP messages
Remove the ‘Route’ header in SIP packets.
Bound Interface Name
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