Echo Cancellation Module VPMADT032

It is for TDM410P, TDM800P , AEX800,TE122P.
For Asterisk users who connect to the PSTN, the most common type of echo is hybrid echo - the echo introduced by the impedance mismatch between 2-wire and 4-wire telephone circuits. The echo manifests as a distorted and delayed reflection of the users voice while in conversation with an external party through the PSTN. Asterisk itself offers a range of software-based open source echo cancellation routines that are moderately effective in eliminating the hybrid mismatch echo that most Asterisk users experience.
However, there are cases in which these algorithms are not effective. To combat this, introduced DSP-based echo cancellation modules for our multi-port T1/E1/J1 cards and our 24-port analog card.

Now, it is pleased to make available the VPMADT032 echo cancellation module. This module, which offers 128ms (1024 taps) of echo cancellation across all of its channels and provides the same toll-quality G.168 compliant echo cancellation found in HPEC software-based commercial echo canceller. The VPMOCT032 is immune from any system CPU spikes that might otherwise affect a software-based solution.

The VPMADT032 provides a certified carrier-grade algorithm that has been labeled a benchmark for echo cancellation. VPMOCT128 enables users to eliminate echo tails up to 128ms or 1024 taps across all 128 channels in E1 mode or 96 channels in T1/J1 modes. Further, this module takes advantage of the Octasic Voice Quality Enhancement to provide superior sound quality on all calls.

Product List

E1 T1 Cards
Model No.	Connector	Size	E1 / T1 Ports	Buy
TE110P	PCI	2U / 4U	1
TE122P	PCI	2U / 4U	1
TE110PE	PCI-E	2U / 4U	1
TE420	PCI-E	4U	4

FXS FXO Cards
Model No.	Connector	Size	FXO FXS Ports	Buy
X100P	PCI	2U / 4U	1
X400P	PCI	4U	4
AEX410	PCI-E	2U / 4U	4
TDM800P	PCI	4U	8
AEX800	PCI-E	4U	8

IP PBX
Model No.	E1 / T1 / J1 ports	FXS/FXO ports	RJ45 Ports	Type	Size	Buy
PBX1U-4ET	4	0	2	IP PBX	1U Rack Mount PBX
PBX1U-1ET	1	0	2	IP PBX	1U Rack Mount PBX
PBX1U-8OS	0	8	2	IP PBX	1U Rack Mount PBX
PBX1U-4OS	0	4	2	IP PBX	1U Rack Mount PBX
MiniPBX-4ET	4	0	2	IP PBX	Mini PBX
MiniPBX-1ET	1	0	2	IP PBX	Mini PBX
MiniPBX-8OS	0	8	2	IP PBX	Mini PBX
MiniPBX-4OS	0	4	2	IP PBX	Mini PBX

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