User's Manual 372 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
available contact, it sends the INVITE to the second contact, and so
on until a contact answers. If no contact answers, the call fails or is
routed to an alternative destination, if configured.
Note: The device can also fork INVITE messages received for a
Request-URI of a specific contact (user) registered in the database to all
other users located under the same AOR as the specific contact. This is
configured using the SBCSendInviteToAllContacts parameter.
Advanced
Local Host Name
local-host-name
[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 sent to a specific IP Group, and
the Contact header in SIP 18x and 200 OK responses for incoming
INVITE messages received from a specific IP Group. The IP-to-Tel
Routing table can be used to identify the source IP Group from where
the INVITE message was received.
If the parameter is not configured, these headers are populated with the
device's dotted-d
ecimal IP address of the network interface on which the
message is sent.
By default, no value is defined.
Note: To ensure proper device handling, the parameter should be a
valid FQDN.
UUI Format
uui-format
[IPGroup_UUIFormat]
Enables the generation of the Avaya UCID value, adding it to the
outgoing INVITE sent to this IP Group.
[0] Disabled (default)
[1] Enabled
This provides support for interworking with Avaya equipment by
generating Avaya's UCID value in outgoing INVITE messages sent to
Avaya's network. The device adds the UCID in the User-to-User SIP
header.
Avaya's UCID value has the following format (in hexadecimal): 00 + FA
+ 08 + node ID (2 bytes) + sequence number (2 bytes) + timestamp (4
bytes)
This is interworked in to the SIP header as follows:
User-to-User: 00FA080019001038F725B3;encoding=hex
Note: To define the Network Node Identifier of the device for Avaya
UCID, use the 'Network Node ID' (NetworkNodeId) parameter.
Always Use Src Address
always-use-source-addr
[IPGroup_AlwaysUseSour
ceAddr]
Enables the device to always send SIP requests and responses, within a
SIP dialog, to the source IP address received in the previous SIP
message packet. This feature is especially useful in scenarios where the
IP Group endpoints are located behind a NAT firewall (and the device is
unable to identify this using its regular NAT mechanism).
[0] No = (Default) The device sends SIP requests according to the
settings of the global parameter, SIPNatDetection.
[1] Yes = The device sends SIP requests and responses to the
source IP address received in the previous SIP message packet.
For more information on NAT traversal, see 'Remote UA behind NAT' on
page 160.
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