Access To Calling Number From Uccx To Jabber Custom Tab

[A_]

Hello,

anyone knows how i can access to the calling number (not cti port number) in a custom tab in cisco jabber? i'm using the OnTelephonyConversationStateChanged function in a custom tab to get call information like described in this documentation: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/12_1/cjab_b_feature-configuration-for-cisco-jabber_12_1/cjab_b_feature-configuration-for-cisco-jabber_12_1_chapter_0101.html

with

object.remoteParticipants[0].translatedNumber

 i can access to the calling number. but for uccx calls i only get the cti port number. is there any possibilities to access to calling number like ip phones do when clid is activated?

if not, is any possibilty to access to cisco finesse variables from cisco jabber? i think i have to program it in cisco finesse where a variable will be sent to a page via get- or post request and then save it from there and access it again from cisco jabber? or are there better solutions?

i would appreciate any ideas.

thank you!