Sending SMS in PDU mode fails.

[Aleksander Morgado]

On 03/08/17 11:04, José  wrote:
> I am using the 3G XBee Cellular (uses U-Blox SARA-U200 modem) and
> ModemManager from master (d41d717112e6a183a0df510c210e80a86fc11060).
> 
> I am trying to send an SMS with the following commands:
> 
> $ mmcli -m 0 --messaging-create-sms="text='Hello world',number='+627XXXXXX"
> Successfully created new SMS:
>         /org/freedesktop/ModemManager1/SMS/10 (unknown)
> 
> $ mmcli -s 10 --send
> error: couldn't send the SMS:
> 'GDBus.Error:org.freedesktop.ModemManager1.Error.Message.Unknown:
> Unknown error'
> 
> 
> The log shows:
> 
> <debug> [1501676070.461276]
> [../../git/src/mm-iface-modem-messaging.c:511] sms_added(): Added
> local SMS at '/org/freedesktop/ModemManager1/SMS/8'
> <debug> [1501676078.360084] [../../git/src/mm-base-sms.c:178]
> generate_3gpp_submit_pdus():   Processing chunk '0' of text with '11'
> bytes
> <debug> [1501676078.371070] [../../git/src/mm-base-sms.c:208]
> generate_3gpp_submit_pdus(): Created SMS part for singlepart SMS
> <debug> [1501676078.374057] [../../git/src/mm-sms-part-3gpp.c:805]
> mm_sms_part_3gpp_get_submit_pdu(): Creating PDU for part...
> <debug> [1501676078.377048] [../../git/src/mm-sms-part-3gpp.c:892]
> mm_sms_part_3gpp_get_submit_pdu():   using GSM7 encoding...
> <debug> [1501676078.379982] [../../git/src/mm-sms-part-3gpp.c:957]
> mm_sms_part_3gpp_get_submit_pdu():   user data length is '11' septets
> (without UDH)
> <debug> [1501676078.382961] [../../git/src/mm-port-serial.c:1250]
> mm_port_serial_open(): (ttymxc4) device open count is 2 (open)
> <debug> [1501676078.386006] [../../git/src/mm-port-serial-at.c:459]
> debug_log(): (ttymxc4): --> 'AT+CMGS=22<CR>'
> <debug> [1501676078.431257] [../../git/src/mm-port-serial-at.c:459]
> debug_log(): (ttymxc4): <-- '<CR><LF>> '
> <debug> [1501676078.435569] [../../git/src/mm-port-serial.c:1250]
> mm_port_serial_open(): (ttymxc4) device open count is 3 (open)
> <debug> [1501676078.438554] [../../git/src/mm-port-serial.c:1307]
> _close_internal(): (ttymxc4) device open count is 2 (close)
> <debug> [1501676078.441551] [../../git/src/mm-port-serial-at.c:459]
> debug_log(): (ttymxc4): -->
> '000100099126379999F100000BC8329BFD06DDDF723619\26'
> <debug> [1501676078.573891] [../../git/src/mm-port-serial-at.c:459]
> debug_log(): (ttymxc4): <-- '<CR><LF>+CMS ERROR: 38<CR><LF>'
> <debug> [1501676078.597195] [../../git/src/mm-error-helpers.c:218]
> mm_message_error_for_code(): Invalid message error code: 38
> <debug> [1501676078.600884] [../../git/src/mm-serial-parsers.c:364]
> mm_serial_parser_v1_parse(): Got failure code 500: Unknown error
> <debug> [1501676078.604622] [../../git/src/mm-port-serial.c:1307]
> _close_internal(): (ttymxc4) device open count is 1 (close)
> 
> However if I use a serial console and the following AT commands, the
> SMS is properly sent:
> 
> ATZ
> OK
> AT+CMGF=1
> OK
> AT+CMGS="+627XXXXXX"
>> Hello world
> +CMGS: 193
> 
> OK
> 
> 
> a) Could you give any information about why is PDU mode failing?
> According to U-Blox documentation (1) it should be working
> 

I'm assuming that if you send the PDU manually using a serial console it also doesn't work, did you try that?
+CMS error 38 is "Network out of order", but I'm not sure why text mode would work without error while PDU mode gives error 38.

> b) Is there a way to tell ModemManager to use text mode when sending SMSs?

No; text mode is only used by default when PDU mode isn't supported. PDU mode is always preferred really.

Also, which are your SMSC settings? E.g.:
  AT+CSCA?

-- 
Aleksander
https://aleksander.es