Voip ATA 2 Ports FXS and 4 Ports FXS and GSM modules

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
we are looking to make 2 ports and 4 ports , ATA VOIP board with DPS , and best available chipset in market..
need secure firmware - Auto provisioning TR069 - must have enough knowledge about SIP - Second project we are looking
for SIP based GSM < Gateway need design hardware and firmware both - with AUTO provisioning ...

Skills required:
C Programming, Embedded Software, Linux, PCB Layout
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