User's Manual  378  Document #: LTRT-10632 
 
  Mediant 800B Gateway & E-SBC 
Parameter  Description 
  When using the User Info table (see SBC User Information for SBC 
User Database on page 852), registrar "stickiness" is supported only 
when the user initiates the REGISTER request. Therefore, you must 
configure the 'Registration Mode' parameter of the IP Group (User-
type) to which the user belongs, to User Initiates Registration. 
  This feature is also supported when the device operates in HA mode; 
registrar "stickiness" is retained even after an HA switchover. 
Authentication Mode 
authentication-mode 
[IPGroup_AuthenticationM
ode] 
Defines the authentication mode. 
  [0] User Authenticates = (Default) The device does not handle the 
authentication, but simply forwards the authentication messages 
between the SIP user agents. 
  [1] SBC as Client = The device authenticates as a client. It receives 
the 401/407 response from the proxy requesting for authentication. 
The device sends the proxy the authorization credentials (i.e., 
username and password) according to one of the following: 
1)Account configured in the Accounts table (only if authenticating 
Server-type IP Group), 2) global username and pas
(only if authenticating Server-type IP Group), 3) User Information file, 
or 4) sends request to users requesting credentials (only if 
authenticating User-type IP Group). For more information on 
Accounts, see Configuring Registration Accounts on page 
395. 
  [2] SBC as Server = The device acts as an Authentication server: 
  Authenticates SIP clients, using the usernames and passwords 
in the User Information table (see SBC User Information for SBC 
User Database on page 
852). This is applicable only to User-
type IP Groups. 
  Authenticates SIP severs. This is applicable only to Server-type 
Authentication Method List 
authentication-method-list 
[IPGroup_MethodList]  
Defines SIP methods received from the IP Group that must be 
challenged by the device when the device acts as an Authentication 
server. If no methods are configured, the device doesn't challenge any 
methods. 
By default, no value is defined. To define multiple SIP methods, use the 
backslash ( \ ) to separate each method (e.g., INVITE\REGISTER). 
Note: The parameter is applicable only if the 'Authentication Mode' 
parameter is set to SBC as Server [2]. 
Username 
username 
[IPGroup_Username] 
Defines the shared username for authenticating the IP Group, when the 
device acts as an Authentication server. 
The valid value is a string of up to 51 characters. By default, no 
username is defined. 
Note: 
  The parameter is applicable only to Server-type IP Groups and when 
the 'Authentication Mode' parameter is set to SBC as Server (i.e., 
authentication of servers). 
  To specify the SIP request types (e.g., INVITE) that must be 
challenged by the device, use the 'Authentication Method List' 
parameter. 
Password 
password 
IPGroup_Password] 
Defines the shared password for authenticating the IP Group, when the 
device acts as an Authentication server. 
The valid value is a string of up to 51 characters. By default, no 
password is defined.