Adtran 1200864L1 Analog Modem Dial Backup Module (DIM). (Used Adtran NetVanta Analog Modem Dial Backup Interface Module )

Adtran 1200865L1 ISDN BRI Dial Backup Module (DIM). Plug on for NetVanta NIM. ( Adtran NetVanta ISDN BRI U Dial Backup Interface Module )Adtran 1200865L1 ISDN BRI Dial Backup Module...

Adtran NetVanta ISDN BRI 'S/T' Dial Backup Interface Module Part Number:1200875L1Adtran NetVanta ISDN BRI 'S/T' Dial Backup Interface Module Part Number: 1200875L1 Plug-on form factor attaches to any NetVanta Series...