USB E1 interface required

We're looking for someone to design and prototype a USB to E1/T1 interface. Ideally, we'd like to be able to offer 1-8 E1/T1 ports from essentially the same design, and have enough DSP on it to allow on-card echo cancelling. The TMS320VC5509 DSP has enough RAM and horsepower for 2-4 E1s, so this might provide a starting point - it's also got a USB interface, from which it can boot. Something like a PM4354 might do most of the rest of the work.

We're looking for:

- schematics designed

- layout done

- prototype(s) built

- software to "proof of concept" level - e.g. E1 essentially passed

through DSP into Asterisk.

Special bonus points for coming up with a design which'll fit on a PCI-E mini card (which, of course, has USB 2.0 available to it.)

More bonus points available for maintaining clock sync across cards - i.e. allow one card to derive its master clock for timing the E1 or T1 ports from a different card.

Any questions, please PM me.

Thanks --


Evner: Elektronik

Se mere: usb interface, card usb, usb card, master electronics, echo design, usb interface card, interface usb, tms320vc5509 orcad, interface board schematic, ram c, schematics design, ram, proof of concept, master e work, electronics prototype, derive, c# usb, concept prototype, asterisk dsp, asterisk software design, software interface design, designed point, interface software design, usb asterisk, prototype interface

Om arbejdsgiveren:
( 9 bedømmelser ) London, United Kingdom

Projekt ID: #116794

4 freelancere byder i gennemsnit $3975 på dette job


Please,see our PMB

$4500 USD in 70 dage
(1 bedømmelse)

you can always count on us.

$5000 USD in 90 dage
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i am interested in this project

$4400 USD in 100 dage
(0 bedømmelser)

Hi, I Have 6.5 yrs of experience in High-speed board design, testing in Telecom and Datacom field. I did various projects like HSL modem design (converts E1 lines to HDSL lines), v.35 interface card (converts E1 d Flere

$2000 USD in 90 dage
(0 bedømmelser)