Digium Profile - Founded in 1999, Digium is the creator and primary developer of Asterisk®, the industry's first Open Source PBX. Digium is the original creator and primary developer of Asterisk, the industry's first open source PBX and Asterisk Business Edition, the professional-grade version of Asterisk. Used in combination with Digium's PCI telephony interface cards, Asterisk offers a strategic, highly cost-effective approach to voice and data transport over IP, TDM, switched and Ethernet architectures.

• The naming convention for the TDM Series bundles is as follows: TDM# X Y B
  "TDM4" denotes that the card is TDM400P, "X" denotes the number of FXS modules, "Y" denotes the number of FXO modules, and "B" indicates that this product is a bundle without Echo Cancellation. "E" indicates that this product is a bundle with Echo Cancellation or "P" denotes that the card is the base card without any Modules bundled.
• Example: TDM21B is a 2 FXS / 1 FXO card without Echo Cancellation. This is a card within the TDM400 Series, unlike all other models the 400 series does not add the 4 into the Bundled Part Name.
• Example: TDM2413E is a 4 FXS / 12 FXO card with Echo Cancellation. This is a card within the TDM2400 Series.



Digium Cards

Digium Analog Cards	Digital Single Port Cards	Digital Dual Port Cards	Digital Quad Port Cards
Digium TDM2400 Series (0-24 FXO / FXS Ports) Digium AEX2400 Series (0-24 FXO / FXS Ports) Digium AEX800 Series (0-8 FXO / FXS Ports) Digium TDM800 Series (0-8 FXO / FXS Ports) Digium TDM410 Series (0-4 FXO / FXS Ports) Digium TDM400 Series (0-4 FXO / FXS Ports)	Digium TE110P Digium TE120P Digium TE121 Digium TE122 Digium TE122BF	Digium TE205P Digium TE207P Digium TE210P Digium TE212P Digium TE220 Digium TE220B	Digium B410P Digium TE405P Digium TE407P Digium TE410P Digium TE412P Digium TE420 Digium TE420B

Digium Products:

Asterisk Business Edition IP PBX Software, Digium AEX2400, Digium AEX2400E, Digium AEX800, Digium AEX800E, Digium AEX808E OPEN BOX, Digium AMP Cable TDM2400P, Digium Asterisk S800i IP PBX, Digium Asterisk S808i IP PBX, Digium Asterisk S844i IP PBX, Digium B410P, Digium IAXy (S101I), Digium PWR2402B, Digium Rack Mount Break Out Box TDM2400P Series, Digium S110M, Digium S400M, Digium TC400B, Digium TDM2400E, Digium TDM2400P, Digium TDM400P, .