I purchased this with the USB board. I can receive GPS information using the AT commands and I can call the phone number and it picks up with the ATA command and the status line goes solid green. The status light is blinking slowly and a AT#MONI returns the Cingular information. I did issue the AT#BND=1 and like I said incoming calls work but outgoing I get a NO CARRIER. I get the same thing when trying to access SMS or the GPRS.
Do you have to call Cingular and get something switched or get the GPRS username and password or how does that all work. I have been all over the DOCS and have even updated the firmware to the latest version.
I have searched this forum but unless I am searching for the wrong thing I can’t find anything here to help.
There is enough signal (-68dbm), the device is registered to the network, I tried with different SIM from different GSM providers, also tried using numbers from SIM or modem Phonebook: no luck.
you will need the semi-colon to tell it to use voice, otherwise, you will need to go through an extensive AT command sequence to make it default to this.
In my situation the problem was caused by a timeout too short. I try to explain…
My application send the ATD command then waits for the OK response.
If the response doesn’t come before the timeout, then the application try to close the call… but if you send any character through the serial BEFORE the OK, the module aborts the call and answer “NO CARRIER”.
This behaviour is quite funny, but it can be easily replicated (even manually with Hyperterminal or similar).
Someone from Telit confirmed me that is not allowed to send more characters/commands during call setup (maybe I missed it, but this rule is not present in manuals :evil: )
