[jitsi-dev] Issue Report: Offline Contacts Ostel SIP account

I am facing the following issue using Jitsi with a Ostel SIP Account:Configure a SIP account in my Jitsi. Ok, get online.
My friend also configure a Ostel SIP account in his Jitsi.
I added him as my contact. Ok, he is online.Then if he gets offline and online again, Jitsi continues showing him offline.The same happens if I disconnect and connect again. I am offline in his contact list.
If we send messages to each other, no problem (we can receive and send messages).
Tested versions: 2.6.5390 (32 bits)2.7.5415 (64 bits)
Best Regards,