Does anybody have any suggestions on SIP T1/PRI gateways that wont cost a fortune. We run our own Class5 switch and would like to offload traffic via multiple PRI's to our ASTPP/FusionPBX cluster. I've successfully done this using a single T1/PRI Cisco IAD 2400 gateway. (too bad this device sucks at detecting DTMF tones reliably). Before getting into Freeswitch/FusionPBX we've racked up some experience using Digium switchvox products. So I'm leaning towards a digium T1/PRI gateway but I thought I'd throw the question out here and see if anybody else had a better suggestion.