Chapter 19 Voice
NR/FWA Indoor Series User’s Guide
247
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 ASCII characters.
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 ASCII Extended set characters.
RFC Support
PRACK (RFC 3262) 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.
Select Supported or Required to have the Zyxel Device include a SIP Require or
Supported 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.
If you select Supported, the peer device supports the option tag 100rel to send
provisional responses reliably.
If you select Required, the peer device requires the option tag 100rel to send
provisional responses reliably.
Select Disabled to turn off this function.
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
Bound Interface Name If you select AnyWAN, the Zyxel Device automatically activates the VoIP service
when any WAN connection is up.
If you select MultiWAN, you also need to select the pre-configured WAN
connections. The VoIP service is activated only when one of the selected WAN
connections is up.
Outbound Proxy
Outbound Proxy Address Enter the IP address or domain name of the SIP outbound proxy server if your VoIP
service provider has a SIP outbound server to handle voice calls. This allows the Zyxel
Device to work with any type of NAT router and eliminates the need for STUN or a SIP
ALG. Turn off any SIP ALG on a NAT router in front of the Zyxel Device to keep it from
re-translating the IP address (since this is already handled by the outbound proxy
server).
Outbound Proxy Port Enter the SIP outbound proxy server’s listening port, if your VoIP service provider gave
you one. Otherwise, keep the default value.
Use DHCP Option 120 first Select this to have the Zyxel Device use DHCP Option 120 first.
RTP Port Range
Table 98 Voice > SIP > SIP Service Provider > Add New Provider or Edit (continued)
LABEL DESCRIPTION
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