AudioCodes Mediant 2600 - Regular Registration Mode; Single Registration for Multiple Phone Numbers Using GIN

Version 6.8 279 Mediant 2600 E-SBC
User's Manual 18. SIP Definitions
Parameter Description
[Account_HostName]
name is also included in the URI of the INVITE From header.
The valid value is a string of up to 49 characters.
Note: If this parameter is not configured or if registration fails, the 'SIP
Group Name' parameter value configured in the IP Group table is
used instead.
Register
CLI: register
[Account_Register]
Enables registration.
 [0] No (Default)
 [1] Regular = Regular registration process. For more information,
see ''Regular Registration Mode'' on page 279.
 [2] GIN = Registration for legacy PBXs, using Global Identification
Number (GIN). For more information, see ''Single Registration for
Multiple Phone Numbers using GIN'' on page 279.
 The account registration is not affected by the IsRegisterNeeded
parameter.
Contact User
CLI: contact-user
[Account_ContactUser]
Defines the AOR username. This appears in REGISTER From/To
headers as ContactUser@HostName, and in INVITE/200 OK Contact
headers as ContactUser@<device's IP address>.
Notes:
 If this parameter is not configured, the 'Contact User' parameter in
the IP Group table is used instead.
 If registration fails, the user part in the INVITE Contact header
contains the source party number.
Application Type
CLI: application-type
[Account_ApplicationType]
Defines the application type:
 [2] SBC = SBC application.
18.2.1 Regular Registration Mode
When you configure the registration mode in the Account table to Regular, the device
sends REGISTER requests to the Serving IP Group. The host name (in the SIP From/To
headers) and contact user (user in From/To and Contact headers) are taken from the
configured Account table upon successful registration. See the example below:
REGISTER sip:xyz SIP/2.0
Via: SIP/2.0/UDP 10.33.37.78;branch=z9hG4bKac1397582418
From: <sip:ContactUser@HostName>;tag=1c1397576231
To: <sip: ContactUser@HostName >
Call-ID: 1397568957261200022256@10.33.37.78
CSeq: 1 REGISTER
Contact: <sip:ContactUser@10.33.37.78>;expires=3600
Expires: 3600
User-Agent: Sip-Gateway/v.6.80.010.006
Content-Length: 0
18.2.2 Single Registration for Multiple Phone Numbers using GIN
When you configure the registration mode in the Account table to GIN, the Global
Identifiable Number (GIN) registration method is used, according to RFC 6140. The device
performs GIN-based registration of users to a SIP registrar on behalf of a SIP PBX. In
effect, the PBX registers with the service provider, just as a directly hosted SIP endpoint
would register. However, because a PBX has multiple user agents, it needs to register a