We have a GSM gateway (see details at: [url removed, login to view]) and a sim array box with 416 slots for sim cards to use for our own internal calling at the office however do not have the software or system setup so that our business VOIP lines can talk to the sim array and allow us to make calls from the sims that we add to the hardware.
Therefore we either need something some scratch of software like Quescomm have something that you may be able to use as a template.
11 freelancers are bidding on average $4282 for this job
Dear sir, We are a set of teams work for the clients and satisfy them. Reasonable with quality. We really love to work on your project, Please check PM for more details. Thanks A.K