Q. Is there any plan to support "iOS Jabber Device"? Some of our customer wants to monitor call initiated from "iOS Jabber Device".
A. No plans to support iOS Jabber Device. This is not tested but I expect that the 'observing' part should work. Feature requests may not work.
https://developer.cisco.com/site/jtapi/documents/cti-tapi-jtapi-supported-device-matrix/ Check this link for more information