3Com V7122 User Manual page 180

ini File Field Name
Web Parameter Name
EnableGRUU
[Enable GRUU]
UserAgentDisplayInfo
[User-Agent Information]
180
Valid Range and Description
Determines whether or not the GRUU mechanism is used.
Valid options include:
0 = Disable (default)
1 = Enable
The gateway obtains a GRUU by generating a normal REGISTER request.
This request contains a Supported header field with the value "gruu". The
gateway includes a "+sip.instance" Contact header field parameter for each
contact for which the GRUU is desired. This Contact parameter contains a
globally unique ID that identifies the gateway instance.
The global unique id is as follows:
If registration is per endpoint (AuthenticationMode=0), it is the MAC
address of the gateway concatenated with the phone number of the
endpoint.
If the registration is per gateway (AuthenticationMode=1) it is only the MAC
address.
When the "User Information" mechanism is used, the globally unique ID is
the MAC address concatenated with the phone number of the endpoint
(defined in the User-Info file).
If the Registrar/Proxy supports GRUU, the REGISTER responses contain
the "gruu" parameter in each Contact header field. The Registrar/Proxy
provides the same GRUU for the same AOR and instance-id in case of
sending REGISTER again after expiration of the registration.
The gateway places the GRUU in any header field which contains a URI. It
uses the GRUU in the following messages: INVITE requests, 2xx
responses to INVITE, SUBSCRIBE requests, 2xx responses to
SUBSCRIBE, NOTIFY requests, REFER requests, and 2xx responses to
REFER.
If the GRUU contains the "opaque" URI parameter, the
gateway obtains the AOR for the user by stripping the
parameter. The resulting URI is the AOR.
For example:
AOR: sip:alice@example.com
GRUU: sip:alice@example.com;opaque="kjh29x97us97d"
Defines the string that is used in the SIP request header 'User-Agent' and
SIP response header 'Server'. If not configured, the default string '3Com
product-name s/w-version' is used (for example, User-Agent: 3Com-Sip-
Gateway-V7122/v.4.80.004.008). When configured, the string
'UserAgentDisplayInfo s/w-version' is used (for example, User-Agent:
MyNewOEM/v.4.80.004.008). Note that the version number cannot be
modified.
The maximum string length is 50 characters.
V7122 GatewayUser Guide