I’m using an EJoin 512-slot SMS hub, which has 64 of Quectel EG91 devices, and 8 sim slots per device.
When I send a slot switch command (disconnect a modem from one sim and connect to the other), it takes a very long time to become functional, anywhere from 30 seconds (good), to 120+ seconds. The device is located in the same room, so the carrier, the band frequency, etc. stays the same all the time.
Is there a way to preconfigure Quectel to know whatever values it discovers during startup to reduce the startup time?