Chapter 21 Voice
VMG8924-B10A User’s Guide
242
SIP 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 ASCII characters. It does not matter whether the 
SIP server is a proxy, redirect or register server.
SIP Server Port Enter the SIP server’s listening port number, if your VoIP service provider gave you one. 
Otherwise, keep the default value.
REGISTER 
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.
REGISTER 
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
Support 
Locating SIP 
Server 
(RFC3263)
Select this option to have the Device use DNS procedures to resolve the SIP domain and 
find the SIP server’s IP address, port number and supported transport protocol(s).
The Device first uses DNS Name Authority Pointer (NAPTR) records to determine the 
transport protocols supported by the SIP server. It then performs DNS Service (SRV) query 
to determine the port number for the protocol. The Device resolves the SIP server’s IP 
address by a standard DNS address record lookup.
The SIP Server Port and REGISTER Server Port fields in the General section above are 
grayed out and not applicable and the Transport Type can also be set to AUTO if you 
select this option.
RFC 
3262(Require: 
100rel)
PRACK (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 this to have the the peer device require the option tag 100rel to send provisional 
responses reliably.
VoIP IOP Flags  Select the VoIP inter-operability settings you want to activate.
Replace dial 
digit '#' to 
'%23' in SIP 
messages 
Replace a dial digit “#” with “%23” in the INVITE messages.
Remove ‘:5060’ 
and 
'transport=udp' 
from request-
uri in SIP 
messages 
Remove “:5060” and “transport=udp” from the “Request-URI” string in the REGISTER and 
INVITE packets.
Remove the 
'Route' header 
in SIP 
messages 
Remove the 'Route' header in SIP packets. 
Don't send re-
Invite to the 
remote party 
when there are 
multiple codecs 
answered in the 
SDP
Do not send a re-Invite packet to the remote party when the remote party answers that it 
can support multiple codecs.
Bound Interface Name
Table 113   VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued)
LABEL DESCRIPTION