additional precondition:
- internet acces (mobile/WLWN)
I suggest to switch off XMPP inside android layer and send You a XMPP message from a different (test) account using another device. Telepathy should receive this message and the senders address becomes a contact into the phonebook (if linked to a existing contact, it will be shown as nickname with telepathy symbol).
If You want to send someone a message from telepathy, select the person from pervious conversations, then select receivers XMPP address by touching the down arrow before typing any message text. The receivers online status is stated there too.
At least sending and receiving messages with telepathy in Rokua 3.3.0.16 can I confirm working.