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Yealink CPN10 PSTN Adapter Box
Asterisk Gateway | Xorcom - IP PBX (Private Branch Exchange) Developer & Manufacturer, Multi-Tenant PBX, Hotel PBX, Virtual PBX, Call Center PBX / PABX
Cables Direct Ltd Full Master PSTN Leaded Telephone Adapter
USB VoIP/PSTN Phone(A-UPP4) - China Voip Phone and Usb price | Made-in-China.com
Amazon.com : Pheonix Audio MT454-PSTN-PA USB Base Unit with Analog Phone ( PSTN) Interface and Power Amplifier : Audio Conferencing Equipment : Office Products
Phoenix Audio MT454-PSTNP Octopus USB Base Unit with Analog Telephone Interface MT454-PSTN-PA
USB VOIP GATEWAY ADAPTER
Phoenix Audio PSTN Spider MT502 | www.shi.com
MT302-1L
Octopus USB Base Unit with PSTN Interface & Power Amplifier
Yealink EHS40 Wireless Headset Adapter - Headsets Direct
Amazon.com : Pheonix Audio MT454-PSTN-PA USB Base Unit with Analog Phone ( PSTN) Interface and Power Amplifier : Audio Conferencing Equipment : Office Products
Unlocked LINKSYS SPA400 VOIP PSTN Phone Adapter with 4x FXO Ports
A550pu Multi-party Pstn Usb Conference Phone Microphone Speakerphone For 15 Peoples Middle Meeting Rooms - Cctv Microphone - AliExpress
Opengear ACM7008-2-M 8 serial Cisco Straight pinout, ext power, 2 GbE Ethernet or fiber SFP, 4 USB console ports, PSTN modem 2 DIO and 2 output ports - Walmart.com
SEDNA - USB VOIP / PSTN All in one desktop Speaker phone with built in Call forward Gateway and Voice Recording VoIP - Newegg.com
Insys Microelectronics UK Ltd - Industrial PSTN telephone modem for devices with USB ports
Opengear ACM7008-2-M 8 serial Cisco Straight pinout, ext power, 2 GbE Ethernet or fiber SFP, 4 USB console ports, PSTN modem 2 DIO and 2 output ports - Walmart.com
Micon USB/PSTN T-30 switch - make VOIP, Skype or regular phone calls! | eBay