Tax included
Reference: VODIGITC400B

Transform VoIP audio and reduce echo in hybrid environments.

Delivery time approx. 14 days

  • Security policy Security policy
  • Free delivery for order over € 300 Free delivery for order over € 300
  • Return policy Return policy
  • Payment with VISA, VISA Electron, MasterCard, Maestro Payment with VISA, VISA Electron, MasterCard, Maestro
  • Diners Club, American Express Diners Club, American Express

The TC400B is a bundle of the half-length, low-profile PCI-2.2 compliant TC400P base card and the TC400M voice processing module. The TC400B is designed to perform, in dedicated DSP resources, the complex codec translations for highly compressed audio as would otherwise be processed by Asterisk® in software on the host CPU.

Asterisk, in software and with Digium® G.729a licensing, is capable of transforming the G.729a codec into other codecs for the purposes of call origination or termination, bridging disparate calls or VoIP to TDM connectivity. These transformations in software are very expensive, in terms of MIPS, and require a substantial amount of CPU time to accomplish. The TC400B not only relieves the CPU of this duty, freeing it up to handle other tasks or to complete additional call processing; but also provides Asterisk with the capability of transforming G.723.1 compressed audio into other formats, a capability not previously possible.

The TC400B decompresses G.729a (8.0kbit) or G.723.1 (5.3kbit) into ?-law or a-law; or, compresses u-law or a-law into G.729a (8.0kbit) or G.723.1 (5.3kbit). The TC400B is rated to handle up to 120 bi-directional G.729a transformations or 92 bi-directional G.723.1 transformations. The TC400B does not require additional licensing fees for the use of these codecs nor does it require the registration process associated with Digiums software-based G.729a codec licensing.


  • TC400M Voice Processing Module
  • Half-Length Low Profile PCI 2.2 Card
  • Codec Licensing and Indemnification
  • 120 G.729a Transcodes
  • 92 G.723.1 Transcodes


  • Zaptel 1.2.13 or greater and Asterisk® 1.2.15 or greater
  • Zaptel 1.4.1 or greater and Asterisk® 1.4.1 or greater
  • Linux Kernel 2.6
  • Available PCI Slot


  • Media Gateway
  • Conferencing Server
  • IVR Server
  • Distributed Office PBX
  • Call Centers


  • G.729a (8.0kbit)
  • G.723.1 (5.3kbit)
  • µ-law
  • a-law

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