Digium offers a full line of high quality analog and digital interface cards to connect your IP PBX, IVR, VoIP Gateway, or custom telephony solution to the public telephone network. Digium also has hybrid cards, voice compression cards, modules, and accessories built specifically for Asterisk.
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Digium 1TE235BF Two (2) Span Digital T1/E1/J1/Pri PCI-Express X1 Card & HW Echo Cancellation (Vpm064)SKU: 1TE235BF$1,100.75
Digium 1TE435BF Four (4) Span Digital T1/E1/J1/Pri PCI-Express X1 Card and HW Echo Cancellation (Vpm128)SKU: 1TE435BF$1,797.75