> We need to get a SIP module for our 7609 with Sup720-BASE, i > want to know the compatability matrix, any ideas ? Only the SIP-200 is supported with the 'old' Sup720 (PFC3A). You need to be running 12.2(18)SXE. *Why* the SIP-400 and -600 isn't supported with Sup720 (3A), I don't understand. Maybe it's just a matter of dev testing. -A