Hello Alex,

The “inbox” (per port) is essentially just a log of what messages the particular port (modem with sim card) has received from the cellular network.

The contents of each inbox does not reflect if the SMS/text messages listed (in each inbox) was delivered or not to your host application.

The “Receive API query commands” do Not implement/need/use a modem number specific option (“filter” option).

The “Send API commands” that we support/use Does include a modem specific option so you can pick which sim/account you want to send out SMS messages through. Maybe you are confusing this send function with our receive function?

Even though the WEB menus display an “inbox” per port – all SMS messages that come from the mobile network, regardless of what modem port they came in on, are held in our “receive queue”. Depending on how you set up our Receive API – you either query our pool to get the sms or we automatically post the message to your host application. The response we give/post contains (among other things) which port the SMS was received on.

How do you have the “Non Polling Receive API Configuration” section, of the “SMS API” menu, configured?

Sincerely

Jeff Blees

Engineering Technician