ERROR 111 slows down Nokia cardphone 2.0

[kuti]

Dear support people,
We have a Nokia Cardphone 2.0 and we use for mass message sendings. The problem is that after sending the first message the speed of processing slows down because I often get ERROR 111. After a retry the sending is succesful.
I assume that this error message appears when incoming status report of the previous message arrives. I tried to use various timings, sleeps between sending the messages but without success. The cut from the log is below -- please tell me if you need further information (e.g. from init commands, etc).
Thank you,
Gabor

--> AT+CMGS=120
<CR><LF><--
<'>'><' '>--><PDU>^Z
<CR><LF><--
<'+'><'C'><'M'><'G'><'S'><':'><' '><'2'><'0'><'1'><CR><LF><-- +CMGS: 201
<CR><LF><--
<'O'><'K'><CR><LF><-- OK
--> AT+CMGS=119
<CR><LF><--
<'>'><' '>--><PDU>^Z
<CR><LF><--
<'+'><'C'><'M'><'S'><' '><'E'><'R'><'R'><'O'><'R'><':'><' '><'1'><'1'><'1'><CR><LF><-- +CMS ERROR: 111
-- We get error so retry
--> AT+CMGS=119
<CR><LF><--
-- retry
<'+'><'C'><'D'><'S'><'I'><':'><' '><'"'><'S'><'M'><'"'><','><'1'><CR><LF><-- +CDSI: "SM",1
-- notification of arrived status report
<CR><LF><--
<'>'><' '>--><PDU>^Z
sending pdu

<CR><LF><--
<'+'><'C'><'M'><'G'><'S'><':'><' '><'2'><'0'><'2'><CR><LF><-- +CMGS: 202
-- success for the second time

<CR><LF><--
<'O'><'K'><CR><LF><-- OK

[auvinent]

Hello!

Can't you just wait until you get the delivery report from previous message? Naturally you need to set some maximum time to wait, but using this method you should avoid the problem. There's also one AT-command to be used to leave RPL open, by using this option the link to signaling channel is kept open. If I remember correctly command was called +CMMS (More messages to send.)

Teemu / Forum Nokia