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Sip-to-GSM gateway for Android - repost

This project received 13 bids from talented freelancers with an average bid price of $1038 USD.

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Employer working
Skills Required
Project Budget
$250 - $750 USD
Total Bids
13
Project Description

Need application for Android which use WiFi network to terminate call to or originate from GSM network to SIP.
Related existing project is like chan_datacard module for Asterisk which use AT commands for establish and terminate GSM calls. Application should have option to use outbound proxy server or VPN for ability working in networks with restricted or closed Sip ports.

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