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 --


Beceriler: Elektronik

Daha fazlasını görün: 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

İşveren Hakkında:
( 9 değerlendirme ) London, United Kingdom

Proje NO: #116794

4 freelancer bu iş için ortalamada 3975$ teklif veriyor


Please,see our PMB

in 70 gün içinde4500$ USD
(1 Değerlendirme)

you can always count on us.

in 90 gün içinde5000$ USD
(0 Değerlendirme)

i am interested in this project

in 100 gün içinde4400$ USD
(0 Değerlendirme)

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 Daha fazlası

in 90 gün içinde2000$ USD
(0 Değerlendirme)