CTI (Computer Telephony Integration) Link Feature

Considerations and Constraints

Private Network Operation

Operation for non-local extension calls in CTI-linked PassageWay Telephony Services applications depends upon the application implementation as well as the type of private networked trunk (PRI, analog tie, or T1 tie) that carries calls between the systems, according to the following rules:

• For an outgoing call, if the PassageWay Telephony Services application uses the length of a destination telephone number in order to differentiate PSTN calls from UDP calls, a PassageWay Telephony Services client displays a non-local extension call in the same way as it does inside calls.
• For an outgoing call, if the PassageWay Telephony Services application uses receipt of the Network Reached event to differentiate PSTN calls from inside calls, a PassageWay Telephony Services client displays a non-local extension call or other UDP-routed call in the same way it does an outside call made to the public switched telephone network.
• For an incoming call, if the PassageWay Telephony Services application uses the length of ANI information to differentiate PSTN calls from UDP calls, a PassageWay Telephony Services client displays a non-local UDP call as an inside call.
• For an incoming call, if the PassageWay Telephony Services application uses the presence of a trunk identifier in the delivered event to differentiate PSTN calls from UDP calls, a PassageWay Telephony Services client displays a non-local UDP call in the same way it does a PSTN call.
• For an incoming PSTN call that enters the private network on a PRI trunk with an ANI of length shorter than seven digits and crosses PRI tandem trunks only, the recipient PassageWay Telephony Services client display depends on the PassageWay Telephony Services application implementation.

  If the PassageWay Telephony Services application does not strip leading zeros, the PassageWay Telephony Services client displays the ANI information with any leading zeros needed to make the information seven digits long.

  If the PassageWay Telephony Services application strips leading zeros, the recipient PassageWay Telephony Services client displays the ANI information in its original length. The call displays as an inside or outside call, depending on whether ANI information or a trunk identifier in the delivered event is used to the differentiate the call.

If the non-local dial plan recipient of a transfer or conference call is a PassageWay Telephony Services client, the recipient's display shows caller information about the conference or transfer originator, not about any other caller. Users at CTI-linked PassageWay Telephony Services extensions must use the telephones at their extensions to make transfers to non-local dial plan extensions or to add conferees to a conference. They cannot use their PassageWay applications. A PassageWay Telephony Services client display does not provide an indication when a conferee is dropped.

A call may come in from the PSTN to an auto attendant, such as MERLIN MAGIX Mail, that collects digits from the caller (a customer number, for example). If the application then sends the call to a non-local PassageWay Telephony Services client, the collected digits do not trigger screen pop at the recipient display, regardless of the type of trunks over which the call is routed.

If a call that has collected digits associated with it is answered and then transferred, the collected digits do not transfer to a non-local PassageWay Telephony Services client, regardless of the facility.

Topics
	Description
	Platform Requirements Screen Pop Collected Digits Power Dial Basic Call Control Programming a CTI Link
	At a Glance
	Considerations & Constraints
	Private Network Operation
	Mode Differences
	Telephone Differences
	Feature Interactions