Halo Kwadrat is a leading Central & Eastern Europe distributor of Sangoma Technologies, Patton Electronics, 3CX, TelcoBridges. Good prices, fast shipments, no sales people - only engineers. Quality free and paid support by experienced telephony specialists that know our products and multiple open source telephony projects. Portfolio: PCI Cards for Asterisk, FreeSWITCH, 3CX - PRI, BRI, Analog, GSM CPE VoIP Gateways - PRI, BRI, Analog High Density Media Gateways - STM-1, multiple E1s Windows based software PBX - 3CX