AudioCodes Mediant 500 E-SBC, User Manual

Page: 357 / 920

User's Manual 22. Trunk Group
Version 6.8 357 Mediant 500 E-SBC
Parameter Description
is selected.

For the third incoming call, the second channel of Trunk 0
is selected.

[11] Dest Ascending = The device allocates a
channels to incoming IP-to-Tel calls as follows:
a. The device attempts to route the call to the channel that is
associated with the destination (called) number. If located,
the call is sent to that channel.
b. If the number is not located or the channel is unavailable
(e.g., busy), the device searches in ascending order for
the next available channel in the Trunk Group. If located,
the call is sent to that channel.
c. If all the channels are unavailable, the call is released.
Note: If this parameter is not configured, the Trunk Group's
channel select method is according to the global parameter,
ChannelSelectMode.
Registration Mode
CLI: registration-mode
[TrunkGroupSettings_Registrat
ionMode]
Defines the registration method for the Trunk Group:

[1] Per Gateway = (Default) Single registration for the entire
device. This is applicable only if a default Proxy or Registrar IP
is configured and Registration is enabled (i.e., parameter
IsRegisterUsed is set to 1). In this mode, the SIP URI user
part in the From, To, and Contact headers is set to the value
of the global registration parameter, GWRegistrationName or
username if GWRegistrationName is not configured.

[0] Per Endpoint = Each channel in the Trunk Group registers
individually. The registrations are sent to the 'Serving IP Group
ID' if defined in the table, otherwise, it is sent to the default
Proxy, and if no default Proxy, then to the Registrar IP.

[4] Don't Register = No registrations are sent by endpoints
pertaining to the Trunk Group. For example, if the device is
configured globally to register all its endpoints (using the
parameter ChannelSelectMode), you can exclude some
endpoints from being registered by assigning them to a Trunk
Group and configuring the Trunk Group registration mode to
'Don't Register'.

[5] Per Account = Registrations are sent (or not) to an IP
Group, according to the settings in the Account table (see
''Configuring Registration Accounts'' on page
281 ).
An example is shown below of a REGISTER message for
registering endpoint "101" using the registration Per Endpoint
mode:
REGISTER sip:SipGroupName SIP/2.0
Via: SIP/2.0/UDP
10.33.37.78;branch=z9hG4bKac862428454
From: <sip:101@GatewayName>;tag=1c862422082
To: <sip:101@GatewayName>
Call-ID: 9907977062512000232825@10.33.37.78
CSeq: 3 REGISTER
Contact: <sip:101@10.33.37.78>;expires=3600
Expires: 3600
User-Agent: Sip-Gateway/v.6.60A.011.002
Content-Length: 0
The "SipGroupName" in the Request-URI is configured in the IP
Group table (see ''Configuring IP Groups'' on page
263 ).