Chapter 16 VoIP
P-2601HN(L)-F1 Series User’s Guide
186
16.4
The SIP Common Screen
Use the
Common
screen to configure RFC3262 support on the ZyXEL Device. To
access the following screen, click
VoIP > SIP > Common
.
Figure 84
VoIP > SIP > Common
Each field is described in the following table.
Table 50
VoIP > SIP > Common
LABEL
DESCRIPTION
Bound Interface Name
Bound Interface
Name
If you select
LAN
or
AnyWAN
, the ZyXEL Device automatically
activates the VoIP service when any LAN or 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 the selected
WAN connection is up.
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/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.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to return to the previous screen without saving.