PSTN VOIP PBX Server Abundant Voice Service , Asterisk Voip Gateway Trunking Gateway
8 port fxo fxo asterisk analog pci express card
128 FXS Analog VoIP Gateway Support Asterisk Freeswitch IPPPBX IAD3128
Analog Station 4FXS VoIP Telephony Foreign Exchange Station Trunk Module
4E1/T1 VoIP Trunk Gateway, SIP, H.323
Pri Gateway, Isdn to VoIP, E1 to SIP Converter, Ncli Router, Cli Router