Phone1: V4.0707.0.7 28-03-2007 RM-92 N80 (02)
Phone2: V4.0632.0.38 13-10-2006 RM-92 N80 (555.01)

Both phones are configured for the sip provider sipgate.de. On both of them the calls inside of the sip-environment (sip-sip calls) are working very nicely. But only phone2 is able to place calls to non-sip clients. Also incoming calls from normal landline phones cannot be handled on phone1. Is this an issue with some codecs missing on the revision of the phone1? But it should be the _newer_ one...