I think the app is running on a server somewhere. And with AT commands you need a phone or modem… which are limited to sending about one message per second and receiving five or less. Not ideal if you want to send a lot of SMS. I came across this info while sending SMSs on a C# app. The modem was Huawei so am not sure if it applies to other modems as well.
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Disadvantage of this is you cannot send and receive at the same time especially when handling bulk messages. Unless you program listening time. Gateways are much faster too.
Some gateways provide sending via short message peer to peer SMPP.
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@TerribleWaste and @kiki , with proper synchronization you can send and receive at the same time. Only annoying thing is the need for a physical SIM.
Will post some code that has proper synchronization and can do that. Even modems have two comm ports, so you listen on one and send through the other
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$0.0075 per message to receive
$0.0075 per message to send
That’s approx Kshs 0.75 cents per sms which is a very good deal so I will go with twilio
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Please promote our fellow developers.
With twilio you cannot use custom senders ID. All custom sender id originating from international gateways are blocked.
@jimmy_m I doubt all com ports are useable. Wouldn’t that imply the dongle has 2 modems? Correct me if I’m wrong. That’s why the dashboard/mobile partner should always be closed when executing serial AT commands.
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Does this mean that I will not be able to send the ID of my company to the users?.. anyway will discuss it with other decision makers, though I doubt we will take in the 33% additional cost just to support a local initiative…
Yes.
Actually the mobile partner has to be closed because it’s locking both comm ports and as you have rightly mentioned, a comm port cannot be used by two apps at once.
However here is a test that you can run to confirm what am saying, just connect a modem and write some code for listing available comm ports, you will notice that you have 2 comm ports from the modem. Write AT+CPMS=1 to each comm and you will notice they give you the correct response. Can give some C# code if you are interested
I have used https://www.questdesigners.com/bulk-sms-messages the a very nice bulk sms portal plus an incredible sms API
Just go with AfricasTalking. They have a very reliable service plus the best customer care. There is also nothing as great as having a branded sender ID instead of some random number
I have used https://www.questdesigners.com/bulk-sms-messages the a very nice bulk sms portal plus an incredible sms API
Just go with AfricasTalking. They have a very reliable service plus the best customer care. There is also nothing as great as having a branded sender ID instead of some random number
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