Use the WebAdmin Interface to configure the SIP module. Open the Real-Time pages in the Settings realm, then open the SIP pages.
Click the Receiving link to open the SIP Server (UAS) Settings.
The Transactions panel allows you to specify how the SIP Module handles SIP server (UAS) transactions.
Log: Use the Log setting to specify what kind of information the SIP Server subcomponent should put in the Server Log. Usually you should use the Failure (unrecoverable problems only), Major (session establishment reports), or Problems (failures, session establishment and non-fatal errors) levels. The SIP Server subcomponent records in the System Log are marked with the SIPS tag.
Processors: Use this setting to specify the number of threads used to process SIP Server transactions.
Object Limit: Use this setting to specify the maximum number of concurrent server transactions the SIP Module is allowed to handle. When this number is exceeded, incoming SIP packets with new requests are dropped.
Event Limit: Use this setting to specify the maximum number of unprocessed events sent to all active SIP server transactions. If this number is exceeded, the SIP Server component is overloaded: no new SIP server transactions can be created, and incoming SIP packets with new requests are dropped.
The SIP Module server component implements Request Authentication for remote clients. If an internal Server component rejects a Request because it does not contain authentication data, the Module adds special fields to the response it sends, facilitating authentication.
Advertise Digest AUTH: Select this option to inform SIP clients that the standard DIGEST authentication method is supported.
Advertise Digest NTLM: Select this option to inform SIP clients that the non-standard NTLM authentication method is supported.
The user name specified in the authentication data is processed using the Router component, so Account Aliases and Forwarders, as well as Domain Aliases can be used in authentication names. The specified Account and its Domain must have the SIP Service enabled.