PANASONIC VB-43709 4 LINE KSU/PBX digital to analog telephony converter adapter

Allworx 6x IP Phone System Network Server Unit w/ AC Adapter Supports 9212L KSU

Toshiba Strata CHSU40A3 PBX Phone System, Used

Stratagy DK Conventional System PBX for Phone Switching Systems Model ST91420AG

Vodia IOP Small Form Factor PBX Phone System

Toshiba Strata CIX40 IP CHSU40A PBX Phone System, w/o PSU

Toshiba Strata CHSUB112A2 PBX Phone System cards included