CHAPTER19 Coders and Profiles
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
■ [1] Database URL = The device changes the Contact
header so that the re-route request is sent through the
device. The device changes the URI in the Contact
header of the received SIP 3xx response to its own URI
and adds a special user prefix ("T~&R_”), which is then
sent to the FEU. The FEU then sends a new INVITE to
the device, which the device then sends to the correct
destination.
■ [2] Handle Locally = The device handles SIP 3xx
responses on behalf of the dialog-initiating UA and
retries the request (e.g., INVITE) using one or more
alternative URIs included in the 3xx response. The
device sends the new request to the alternative
destination according to the IP-to-IP Routing table (the
'Call Trigger' field must be set to 3xx).
■ [3] IP Group Name = If the 'SIP Group Name'
parameter of the IP Group of the dialog-initiating UA is
configured with a non-empty value, the device changes
the host part of the Contact header in the 3xx response
to this value, before forwarding the 3xx response to the
dialog-initiating UA.
■ [4] Local Host = The device changes the host part of
the Contact header in the 3xx response before
forwarding the 3xx response to the dialog-initiating UA.
If the 'Local Host Name' parameter of the IP Group of
the dialog-initiating UA is configured with a non-empty
value, the device changes the host part of the Contact
header to this value. If the 'Local Host Name' is empty,
the device changes the host part to the device's IP
address (the same IP address used in the SIP Via and
Contact headers of messages sent to the IP Group).
Note:
■ When the parameter is changed from Database URL to
Transparent, new 3xx Contact headers remain
unchanged. However, requests with the special prefix
continue using the device's database to locate the new
destination.
■ Optional values IP Group Name and Local Host are
applicable only to 3xx responses received due to
INVITE messages.
■ Only one database entry is supported for the same
host, port, and transport combination. For example, the
following URLs cannot be distinguished by the device:
✔ sip:10.10.10.10:5060;transport=tcp;param=a
✔ sip:10.10.10.10:5060;transport=tcp;param=b
■ The database entry expires two hours after the last use.
■ The maximum number of destinations (i.e., database
entries) is 50.
- 425 -
To Next Page
Loading...
Need help?
General
