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                        | Digium TDM420B Analog Card 
 The Digium TDM420B is a 4-port modular analog PCI 3.3/5.0V card with 2 station and 0 trunk interfaces. The resulting product is a half length PCIx 2.2 compliant, 4 port card that supports 4 analog telephone lines.
 
 Digium TDM420B Analog Telephony Card Information:
 
 As a modular gateway card, the Digium TDM410P connects analog telephone stations and analog POTS lines through a PC.
 
 The Digium TDM410P provides support for up to four station or trunk modules totaling 4 lines.
 
 Using this card in concert with Digium's Asterisk software, standard PC hardware, and the Linux OS, you can create SMB or SOHO telephony environments capable of satisfying the needs of small or medium business applications at an industry-leading price.
 
 Digium TDM420B Features:
 
 
                            Additional Product Information:5 Year Warranty2 FXS Port and 0 FXO PortVoltage Agnostic 3.3v or 5vPCI interfaceDigium Exceptional Satisfaction Program (ESP)Optional Echo Cancellation 
 Digium Part Number: 1TDM420BF
 UPC Code: 797734474558
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