Adtran - 1200861L1 - Network Interface Module 56/64 1000/3000 Series 1200861L1 - Adtran - Netvanta 56/64 Ntwk I/f Mod For 1000/3000 Series $53.44
Cisco - 800-00624-01 - Interface Card ISDN-BRI 2500 Series 800-00624-01 - Cisco - ISDN-BRI 2500 Series Interface Card $60.95 $49.55
HP - JD571A - Interface Card 1-Port ISDN BRI S/T JD571A - HP - 1-Port ISDN-S/T Smart Interface Card 1 x ISDN BRI (S/T) WAN $168.53 $142.82
HP - J9010A - Router Module 2-Port ISDN BRI U J9010A - HP - ProCurve Secure Router dl 2-Port ISDN BRI U Module 2 x ISDN BRI (U) $1,062.27 $863.64
Cisco - WIC-1B-U - WAN Interface Card 1-Port ISDN BRI WIC-1B-U - Cisco - WAN Interface Card (WIC) 1 x ISDN BRI (U) WAN WAN Interface Card (WIC) $54.05 $43.94