SMS Send failed (Command failed.)

[stefang]

Trying to send a SMS on our phone always returns the error
SMS Send failed (Command failed.)

With debug=on, output looks like this:

$ echo 'test' | gnokii --sendsms 04********
GNOKII Version 0.6.12
LOG: debug mask is 0x1
phone instance config:
model: 3120
port_device: /dev/ttyACM0
connection_type: 0
init_length: 0
serial_baudrate: 19200
serial_write_usleep: -1
hardware_handshake: 0
require_dcd: 0
smsc_timeout: 100
connect_script:
disconnect_script:
rfcomm_cn: 1
sm_retry: off
Connecting
Serial device: opening device /dev/ttyACM0
Serial device: setting speed to 115200
Serial device: setting RTS to low and DTR to low
Getting model...
Message sent: 0x1b / 0x0006
00 01 00 07 01 00                               |
[Received Ack of type 1b, seq: 80]

[Sending Ack of type 1b, seq: 7]
Message received: 0x1b / 0x0032
01 31 00 08 00 01 58 2c 00 26 56 20 30 36 2e 33 |  1    X, &V 06.3
31 20 20 20 20 20 0a 32 35 2d 31 31 2d 30 35 0a | 1      25-11-05
52 48 2d 31 39 0a 28 63 29 20 4e 6f 6b 0a 54 00 | RH-19 (c) Nok T
00 00                                           |
Received message type 1b
model length: 5
Received model RH-19
Message sent: 0x02 / 0x0006
00 01 00 14 01 00                               |
[Received Ack of type 02, seq:  1]
[Sending Ack of type 02, seq: 0]
Message received: 0x02 / 0x003e
01 5b 00 15 00 01 0b 38 01 e1 00 00 ff 02 82 0c |  [     8
02 08 07 91 16 14 78 60 07 f0 81 24 1e 00 00 4d |       x`   $   M
00 4f 00 42 00 49 00 4c 00 45 00 4e 00 45 00 54 |  O B I L E N E T
00 20 00 53 00 4d 00 53 00 43 00 00 00 00       |    S M S C
Received message type 02
Frame of type 0x02 (SMS handling) received!
SMSC Received
General Data Coding
dcs: 0x0
Length: 0x4
user_data_length: 0x4
ValidityIndicator: 2
user_data: F4F29C0E
Sending
Sending SMS...(54)
Message sent: 0x02 / 0x0036
00 01 00 02 00 00 00 55 55 01 02 2c 11 00 00 00 |        UU  ,
00 04 82 0c 01 07 0a 81 40 30 28 58 44 00 82 0c |         @0(XD
02 03 02 91 f0 00 00 00 00 00 80 08 04 04 f4 f2 |
9c 0e 08 04 01 a9                               |
[Received Ack of type 02, seq:  2]
[Sending Ack of type 02, seq: 1]
Message received: 0x02 / 0x000e
01 5b 00 03 00 01 0c 08 01 6f 1b 55 55 00       |  [       o UU
Received message type 02
Frame of type 0x02 (SMS handling) received!
SMS sending failed
SMS Send failed (Command failed.)
Serial device: closing device