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Cisco BTS 10200 Softswitch SIP Protocol User Guide
OL-5352-03
Chapter 2 SIP Protocol Subscriber Features
SIP User Authentication
In this release, Cisco BTS 10200 can act as an authentication server. Authentication is enabled on the
serving domain through provisioning.
Whenever a SIP request is received from a SIP subscriber, the request is authenticated to ensure it is
indeed from an identified user. Authentication also enables request authorization, since users may be
authorized to perform only specific requests.
The following examples are the functional scenarios in which authentication is required:
1. When a SIP user registers a contact with the Cisco BTS 10200 Registrar using a REGISTER
request.
2. When a SIP user initiates a call using an INVITE request.
3. When a SIP user sends any request in an ongoing call. Examples might include:
–
Re-negotiation of the call parameters using a re-INVITE
–
Terminating the call using a BYE
–
Initiating a call transfer using a REFER
4. When a SIP user sends a request outside a dialog. Example: OPTIONS.
The following new tables have been defined for SIP subscribers, which are pertinent to Authentication:
• AOR
• Serving Domain
• Auth-Realm
• User-Auth
See Chapter 5, “Database Tables” for more information about the tables.