Here’s the proposed GSM Gateway diagram:
We will be using a device similar below (32 channels - 128 SIM card GSM Gateway)
The one we will be purchasing will have the capability of doing 32 simultaneous calls while rotating which sim cards will be used for calls. The reason for 64 sims per gateway is to ensure that sim cards are rotated as not to get blocked by the telco. We will be needing to get corporate plans for this as its cheaper.
Using prepaid sim cards will only get the cards blocked faster and without warning.
attached is the proforma invoice for the said device.
