OpenVox FD140 4 Port T1/E1 PRI or BRI-ISDN Interface Failover Box, 1U
Delock Products 65441 Delock RJ45 Port Doubler 1 RJ45 plug > 2 RJ45 jack (1x Ethernet, 1x ISDN)
Cisco WIC-1B-U 1 Port ISDN BRI WAN Interface Card | eBay
ISDN Ethernet Router with S/T Interface with Built-in 6-port 10Mbps Hub - TRENDnet TW-H6W1IR
2 Port BRI-S/T-U ISDN Simulator
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Definition of ISDN | PCMag
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Cisco 1-Port ISDN BRI U High-Speed WAN Interface Card - Cisco
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