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 --


Færdigheder: 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, master work, electronics prototype, derive, concept prototype, asterisk dsp, asterisk software design, software interface design, designed point, interface software design, usb asterisk, prototype interface, design usb, design usb card

Om arbejdsgiveren:
( 9 bedømmelser ) London, United Kingdom

Projekt-ID: #116794

4 freelancere byder i gennemsnit $3975 for dette job


Please,see our PMB

$4500 USD in 70 dage
(1 bedømmelse)

you can always count on us.

$5000 USD in 90 dage
(0 bedømmelser)

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 Mere

$2000 USD in 90 dage
(0 bedømmelser)