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Project Budget$250 - $750 USD
We have IP PBX (3CX) connected with Gsm Gateway (DINSTAR, supported with SMS service ) and we need to program API, so the PBX user who use remote client could send/receive SMS through the SIM card which located in the Gsm [url removed, login to view] we could use now the voice service only.
and we need to program missed calls notification when the client unregistered
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