ZyXEL Communications Corporation P8802T Manuale Utente

Pagina di 278
 Chapter 15 Voice
Basic Home Station VDSL2 P8802T User’s Guide
211
General
SIP Service 
Provider Name
Enter a descriptive name of up to 63 printable characters for this SIP 
service provider profile. Spaces are not allowed.
SIP Local Port
Enter the VDSL Router’s listening port number, if your VoIP service 
provider gave you one. Otherwise, keep the default value.
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 (RFC 
3263) 
Select this option to have the VDSL Router use DNS procedures to 
resolve the SIP domain and find the SIP server’s IP address, port 
number and supported transport protocol(s).
The VDSL Router 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 VDSL Router resolves the SIP server’s IP 
address by a standard DNS address record lookup.
The SIP Server Port and REGISTER Server Port fields are grayed 
out and not applicable and the Transport Type can also be set to 
AUTO if you select this option.
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 this to have the VDSL Router include a SIP Require/Supported 
header field with the option tag 100rel in all INVITE   requests. When 
the VDSL Router receives a SIP response message indicating that the 
phone it called is ringing, the VDSL Router sends a PRACK message to 
have both sides confirm the message is received. 
If you select this option, the peer device should also support the option 
tag 100rel to send provisional responses reliably.
VoIP IOP Flags
Use this section to modify the header or some information in SIP 
messages in order to resolve interoperability issues with some SIP 
servers.
Table 74   VoIP > SIP > SIP Service Provider (continued)
LABEL
DESCRIPTION