DTMF
RFC2833, SIP INFO, INBAND Codecs
G.711A, G.711U, G.729A, G.723.1, G.722, GSM OpenVox UC Series IP Phone System
Enterprise Series IP Phone System
OpenVox Unified Communication Platform
VS-GW1202 Series,VS-GW1600 Series,VS-GW2120 Series OpenVox MotherBoard
VS-CCU-N2930AM,VS-CCU-500HDD OpenVox GSM VoIP Gateways
WGW1002G,SWG-1016G,VS-GW1202/VS-GW1600/VS-GW2120GSM Series,VS-GWM400G OpenVox WCDMA VoIP Gateways
VS-GW1202/VS-GW1600/VS-GW2120 UMTS Series,VS-GWM400W OpenVox CDMA VoIP Gateways
Other Brand
Grandstream,Yeastar,Dinstar,Zycoo,Polycom,Fanvil,Flyingvoice