Allo.com CT200E Benutzerhandbuch - Seite 4

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Transcoding Card CT200E - User Manual

Overview

The CT200E Series cards are PCI-E base cards. The CT200E Series cards

are designed to handle, transcoding in dedicated DSP hardware, it supports

multiple voice codecs, to digitally compress voice signals and save on

bandwidth. This function would otherwise be done by Asterisk in software.

VoIP communication needs the capability to mediate between endpoints

supporting different codecs, but this requires DSP functionality that are

resource-intensive, and can affect the quality of the voice signals, and may

introduces latency and delay.

Asterisk, is capable of transcoding some codecs into other codecs for the

purposes of call origination or termination, these transcoding in done by

software and is very CPU intensive using substantial amount of CPU power.

This CT200E card will add transcoding capability and provides excellent voice

quality and transcoding capacity, without affecting latency or using up

precious host CPU resources

The CT200E card comes with bundled software to make the product

architecture independent. For example the CT200E Series cards decompress

G.729a (8.0 Kbit) or G.723.1 (5.3 Kbit and 6.3 Kbit) into u-law or a-law; or,

compress u-law or a-law into G.729a (8.0 Kbit) or G.723.1 (5.3 Kbit and 6.3

Kbit).

The CT200E Series cards are capable of handling up to 200 transcoding

resources. All codecs are fully indemnified no additional licensing is required

for their use.

Allo.com Transcoding card CT200E is telephony PCIe card used for various

PBX software, e.g. Asterisk, FreeSWITCH, etc. with compatible drivers,

Features

• Capable of doing the various codec transcoding.

• Suitable for PCIe 1.0 slots

• Provides up to 200 transcoding resources.

• Supports G729, G723, a/u law, G726, ilbc (G722, AMR, AMR-WB,

G722.1 HD etc will be implemented in future releases.)

Version: 1.0

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