Hello Colin, I have checked my sip configuration file and it has no "encoding" parameters at accounts section, But i've noticed a strange thing sometimes when testing sip results i get the Arabic characters good like this *24YYYY YY 00120141224 055624AEمحمد أحمد|AA123456|AFGreetings from **Koha.* But after 30 minutes approximately i get the wrong result like this *24YYYY YY 00120141224 055624AE???? ????|AA123456|AFGreetings from * *Koha.* *Have you any suggestions???* Thanks