Version 6.4 197 March 2012
SIP User's Manual 14. Control Network
Parameter Description
destination is obtained from this entry, and a SIP request is sent to
the destination. The device supports up to 600 registered users.
The device also supports NAT traversal for the SIP clients that are
behind NAT. In this case, the device must be defined with a global
IP address.
Note: This field is available only if the IP-to-IP application is enabled.
Description
[IPGroup_Description]
Brief string description of the IP Group.
The value range is a string of up to 29 characters. The default is an
empty field.
Proxy Set ID
[IPGroup_ProxySetId]
The Proxy Set ID (defined in 'Configuring Proxy Sets Table' on page
200) associated with the IP Group. All INVITE messages destined to
this IP Group are sent to the IP address associated with the Proxy Set.
Notes:
Proxy Set ID 0 must not be selected; this is the device's default
Proxy.
The Proxy Set is applicable only to SERVER-type IP Groups.
SIP Group Name
[IPGroup_SIPGroupName]
The SIP Request-URI host name used in INVITE and REGISTER
messages sent to the IP Group, or the host name in the From header
of INVITE messages received from the IP Group. If not specified, the
value of the global parameter, ProxyName (see 'Configuring Proxy
and Registration Parameters' on page 228) is used instead.
The value range is a string of up to 100 characters. The default is an
empty field.
Note: If the IP Group is of type USER, this parameter is used
internally as a host name in the Request-URI for Tel-to-IP initiated
calls. For example, if an incoming call from the device's T1 trunk is
routed to a USER-type IP Group, the device first creates the Request-
URI (<destination_number>@<SIP Group Name>), and then it
searches the user’s internal database for a match.
Contact User
[IPGroup_ContactUser]
Defines the user part for the From, To, and Contact headers of SIP
REGISTER messages, and the user part for the Contact header of
INVITE messages that are received from the IP Group and forwarded
by the device to another IP Group.
Notes:
This parameter is applicable only to SERVER-type IP Groups.
This parameter is overridden by the ‘Contact User’ parameter in the
‘Account’ table (see 'Configuring Account Table' on page 225).
Domain Name in Contact
[IPGroup_ContactName]
Defines the host name (string) that the device uses in the SIP
message's Via and Contact headers. This is typically used to define an
FQDN as the host name. The device uses this string for Via and
Contact headers in outgoing INVITE messages to a specific IP Group,
and the Contact header in SIP 18x and 200 OK responses for
incoming INVITE messages from a specific IP Group. The Inbound IP
Routing table can be used to identify the source IP Group from where
the INVITE message was received.
If this parameter is not configured (default), these headers are
populated with the device's dotted-decimal IP address of the network
interface on which the message is sent.
Note: To ensure proper device handling, this parameter should be a
valid FQDN.
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