Currently they don't have an english website but in short this card offers 4 Ports (8 Channels) and you are able to define the mode for each channel (PtmP, PtP, TE, NT) on your own. They have asterisk-drivers available (for Kernel 2.4) and what is very interesting about this card is, that if you have ISDN-Telephones in your environment you can connect them not only ti the astersik but when there is a connecten ISDN (internal) --> asterisk --> ISDN (external) then this will happen without asterisk beeing directly involved because these calls are connected through on the hardware without any echo-problems from transcoding the audio. All asterisk features are usable with this card including Fax based on spanDSP.
The price is at around EUR 500,-
Jui
Jeff Lists wrote:
I have a test install set up as follows
Grandstream 102 ---- Asterisk ---- X100P ---- Adtran Express 3000 --- ISDN line to PSTN
Most things I want to do work fine except I do have some intermittent problems with an echo. I am assuming that this is created in the link between the X100P and the Adtran terminal adaptor.
I am not sure of the proper terms but on the PSTN side of the Adtran there is one pair of wires which carry two channels. On the interior side of the Adtran there are two pairs of wires which each carry one channel (is this a BRI channel??).
In the final install I will be replacing the X100P with some type of
ISDN card. I currently have three ISDN pairs which create six lines. I would like to get enough hardware to be able to add one more pair of
lines soon.
My question is what type of ISDN card do I need? Will this replace the Adtran or plug into it? Since this is all digital is it a safe assumption that my echo problems will be gone?
Thanks, Jeff _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
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