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UpBright NEW Global DC 48V AC / DC Adapter For Tone Commander NT1U-220TC Standalone ISDN Network Adapter 48VDC - Walmart.com
BRI/FXS/FXO VoIP Gateway | 4-8 simultaneous G.722/G.711 or 4-8 T.38 calls
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Amazon.com : VoIP Phone Adapter for Voice Over IP, VoIP Gateway with 2 Port Internet Phone Adapter RJ45 Network Interface SIP RJ 45 Cable for PAP2T, Support SIP V2 Protocol, DHCP(US) :
2/4/8-Port BRI ISDN VoIP Gateway | SmartNode 4130
PATTON | Smart Node 4554 | ISDN BRI PSTN prehod
Yeastar NeoGate TE200 PRI Gateway - VoIP Supply
Patton SN4131/2BIS4VHP/EUI - 888VoIP
Smart-DTA ISDN Residential VoIP Digital Telephone Adapter Getting Started Guide
Telekom Speedport ISDN Adapter Deutsche Telekom | eBay
VoIP Gateway Micro-Analog Telephone Adapter | SmartNode M-ATA
VoIP Router with 3 or 5 BRI So Ports | SmartNode 4630