If you want the Jabber or extension to reach your space, then you need to have a Route pattern pointing to SIP Trunk ( pointing to CMS) for example if your space is 861000 then you should have route pattern to send the call to CMS.
Make sure for the inbound rules you don't have any rules( which means allow all) if any rules make sure it's not getting filtered.
Also how your space is configured, is it like email@example.com, then configure the domain.com as sip route pattern pointing to CMS SIP Trunk.
Please let me know where you stuck and what is the error message you getting from event section.
updated: I saw your requirement is for from space to jabber then in this scenario if your XMPP ID is same as Jabber ID then call will not hit the Jabber, assume firstname.lastname@example.org is XMPP ID in CMS and email@example.com is directory
However assume that user is also reachable via firstname.lastname@example.org then if you dial this
Also, this requires client-server template certificate to be used for CMS ( call bridge certificate to work with
Your post is very helpful to redirect the call from CUCM to CMS via SIP URI or space call ID, i have followed the same and call to SIP URI of space is working fine but for space call ID i cannot dial from my phone. whenever i dail, my call fails to connect CMS space.
i have created required route pattern on CUCM pointing to CMS Trunk.
i also have one IVR number for CMS and when i dail that number im connecting to CMS IVR and and via IVR my call is landing on space but if i directly dial the space ID it always fails.