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 Sending link to open the SIP Client (UAC) Settings.
The Transactions panel allows you to specify how the SIP Module handles SIP client (UAC) transactions.
Log: Use the Log setting to specify what kind of information the SIP Client 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 Client subcomponent records in the System Log are marked with the SIPC tag.
Processors: Use this setting to specify the number of threads used to process SIP Client transactions.
Object Limit: Use this setting to specify the maximum number of concurrent client transactions the SIP Module is allowed to handle.
Event Limit: Use this setting to specify the maximum number of unprocessed events sent to all active SIP client transactions. If this number is exceeded, the SIP Client component is overloaded, and no new SIP client transactions can be created.
Force Dialog Relaying: If this option is disabled, the SIP Module introduces itself only into those SIP dialogs that require its participation (such as those involving NAT/Firewall traversal). If this option is enabled, the SIP module introduces itself into all SIP dialogs opened. This feature can be used for troubleshooting, as all details of dialog transactions are recorded in the Server Log.
Relay to Non-Clients: If this option is set to anybody, the SIP Module acts as an Open Relay: it relays any SIP request to any destination. To prevent abuse of your Server, allow relaying for clients only or for nobody. The SIP Module will send Requests if at least one the following conditions is met: