i can call the modem, wich properly responds after 3 rings, but even if I do an ATA by hand i cannot hear the classic fax handshake whistle telling that there is a fax connection going.
when I do a at+ceer i get sometime Error: 16 or Error:241
There is somewhere a comprehensive lists of the error codes with their explanations?
Wow,
i have done an at+crc=1 and found that the incoming call is interpreted as a voice call!
So the problem is the provider?!? (i am in italy)
I am trying to understand: a data call is distingushed by the provider and not by the call itself? So it could be possible that even if I do a modem call to the Fastrack modem and if the sim is not “data enabled” it cannot understand that is a data call?
I have another M1306B connected to a Davis Weather Station that seems have a similar problem (stopped working, it responds but does not send out the handshake…)
Hello,
today I have solved all my problems. After some days in the hands of the provider call centers, I discovered that the sim curretly I have also has two additional “secret” phone numbers.
So the sim has a total of three different phone numbers.
one for the voice call, one for the data call and one for the fax calls.
Now, without changing the sim in the modem:
If I call the “Voice” number i get:
+CRING: VOICE
If I call the “Data” phone number i get:
+CRING: REL ASYNC
If I call the “Fax” phone number i get:
+CRING: FAX
and with +CRING: VOICE the modem does not handshake.
So, remember: give the sim serial number to the provider call center and ask directly what is the “Data” phone number! this could save time…
Some networks do not pre-assign Data (or fax) numbers - you have to specifically request them.
Not all networks provide Data numbers and, if they do, they may only be available on certain types of subsciption.
eg, in the UK, none of the networks except Vodafone will provide a Data number on a pre-pay service.
