Hi, I have a basic GSM modem (T68i) and Sending AT+CPAS gives +CPAS: 0 Ready, +CPAS:3 Ringing or +CPAS:4 Answered. What I need to know is if the line really is ringing rather than setting up the call - i.e. still dialling, or having dialled and now waiting for the ring, engaged etc.
What I’m trying to achieve is to make the target number ring just once then drop the line, its part of a free alert system for a closed group of users. I need to make sure the line is available, send ATD (dial), then keep sending AT+CPAS until RINGING, then time out after 0.5 sec. The problem is it may take several seconds to setup the call, then ring (e.g. dailling overseas) or be pretty much instant for local calls, so I know I need to start my hangup timer only after the first real RINGING reponse, no matter how long that takes.
I don’t use Wavecom at present but am asking here because it may be some Wavecom kit offers this, if so I’m very interested, or another way to query using AT for more states such as DIALLING, SETUP, RINGING, ENGAGED etc which I may have overlooked. Thanks!