/mcpRingback on SIP 183 for Transferred Calls In Release 11.0(1), Cisco JTAPI has been updated with how it responds to SIP 183 messages when a call is transferred over a gateway or trunk. When an established call gets transferred over a trunk and a SIP 183 is received, Cisco JTAPI moves the call to CallControlConnection.NETWORK_ALERTING state. When the call is answered, Cisco JTAPI moves the call state to CallControlConnection.ESTABLISHED. A new Cisco CallManager service parameter, CTI Report Ringback on SIP 183 with SDP, has been added to configure this feature. When this sevice parameter is set to True, the above behavior applies. This is the default setting. If an application needs to use the legacy behavior, you can set the service parameter to False. Under this setting, if the call call is transferred over a gateway or trunk, CTI will use the CallControlConnection.NETWORK_REACHED state to report that the other network has been reached, but CTI will not report back that a connection has been established. Routing Routing in JTAPI requires the configuration of a CTI Route Point on the Cisco Unified Communications Manager. Multiple calls can be queued to this Route Point, but only a single line can be configured on a CTI Route Point device. JTAPI implementation of adjunct Routing, as described in the call center package, includes the following actions: • Registering route callbacks on Route Addresses • Creating appropriate handlers in response to the various routing events (routeSelect, routeEnd) CTI Route Points represent devices that can process any number of incoming calls simultaneously on the same line. You can route calls by using the methods in the javax.telephony.callcenter package, or you can accept, redirect, or disconnect calls by using the methods in the javax.telephony.callcontrol package. You can configure each CTI Route Point with a maximum of 34 lines. To support more than 34 lines, provision additional route points. For details on how to configure and administer the CTI Route Point, refer to the Cisco Unified Communications Manager Administration Guide. Note The following figure shows the CTI Route Point configuration. Figure 13: CTI Route Points Cisco Unified JTAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 153 Features Supported by Cisco Unified JTAPI Ringback on SIP 183 for Transferred Calls