Digium TDM2421B 8 FXS 4 FXO PCI Card

The Digium TDM2421B card is a full-length, 32-bit, 33MHz, PCI 2.2-compliant card that includes 1 quad-port FXO and 2 quad-port FXS modules for a total of 4 FXO ports and 8 FXS ports. It supports up to 6 quad-port FXO or FXS modules, for a total of 24 maximum channels. The TDM2421B does not include a hardware echo cancellation module. The TDM2421B allows you to connect analog telephone lines through a PC and can be used in conjunction with Asterisk. The TDM2421B also comes with a hardware echo cancellation module.

By using Digium's TDM hardware, Asterisk PBX software and PCs, users are able to create a SME or SOS phone environment that can include all the sophisticated features of a high-end PBX/Voicemail platform. The TDM2421B uses a bus-mastering PCI interface chip, and with Digium's patent-pending VoiceBus technology to eliminate the need for a separate channel bank and T1 interface cards. With interchangeable quad-FXO and quad-FXS modules to let you create any combination of interfaces. With optional hardware echo cancellation, you can take advantage of 256 taps of echo cancellation on both FXO and FXS interfaces. The solution is easy to scale by addition additional TDM2400 series cards.

Digium TDM2421B Features:

• Base Card: TDM2400P
• Number of FXO Modules: 1
• Number of FXS Modules: 2
• Maximum Ports: 24
• Echo-Cancellation: No
• Slot Type: PCI