src/net/java/sip/communicator/service/protocol/SingleCallInProgressPolicy.java
/**
     * Registers a specific <tt>OperationSetBasicTelephony</tt> with this policy
     * in order to have the rules of the latter apply to the <tt>Call</tt>s
     * created by the former.
     *
     * @param telephony the <tt>OperationSetBasicTelephony</tt> to register with
     * this policy in order to have the rules of the latter apply to the
     * <tt>Call</tt>s created by the former
     */
Registers a specific OperationSetBasicTelephony with this policy
in order to have the rules of the latter apply to the Calls
created by the former.

@param telephony the OperationSetBasicTelephony to register with
this policy in order to have the rules of the latter apply to the
Calls created by the former
Registers a specific OperationSetBasicTelephony with this policy in order to have the rules of the latter apply to the Calls created by the former . @param telephony the OperationSetBasicTelephony to register with this policy in order to have the rules of the latter apply to the Calls created by the former
private void addOperationSetBasicTelephonyListener(
            OperationSetBasicTelephony<? extends ProtocolProviderService>
                telephony)
    {
        if(logger.isTraceEnabled())
        {
            logger.trace("Call listener added to provider.");
        }
        telephony.addCallListener(listener);
    }
private void addOperationSetBasicTelephonyListener ( OperationSetBasicTelephony < ? extends ProtocolProviderService > telephony ) { if ( logger . isTraceEnabled ( ) ) { logger . trace ( "Call listener added to provider." ) ; } telephony . addCallListener ( listener ) ; }
Registers a specific <tt>OperationSetBasicTelephony</tt> with this policy
 in order to have the rules of the latter apply to the <tt>Call</tt>s
 created by the former.
Registers a specific <tt > OperationSetBasicTelephony< / tt > with this policy in order to have the rules of the latter apply to the <tt > Call< / tt > s created by the former .