Operating system name and version: CentOS release 6.5 (Final)
Version of smsd: Version 3.1.15
Smsd installed from: package repository
Name and model of a modem: huawei e171
Interface: USB

Hello!
I have a problem with huawei e171, outgoing sms are ok
but incoming sms works with bugs.
tail /var/log/smsd/smsd.log -f

2015-06-11 16:43:34,2, smsd: Smsd v3.1.15 started. 2015-06-11 16:43:34,2, smsd: Running as smstools:smstools. 2015-06-11 16:43:34,7, smsd: Running startup_check (shell): /var/spool/sms/incoming/smsd_script.DLqpNn /tmp/smsd_data.8Wgqf0 2015-06-11 16:43:34,7, smsd: Done: startup_check (shell), execution time 0 sec., status: 0 (0) 2015-06-11 16:43:34,4, smsd: File mode creation mask: 022 (0644, rw-r--r--). 2015-06-11 16:43:34,5, smsd: Outgoing file checker has started. PID: 19023. 2015-06-11 16:43:34,7, smsd: All PID's: 19023,19025 2015-06-11 16:43:34,3, smsd: Cannot handle /var/spool/sms/outgoing/send_vwOTpf: Access denied. Check the file and directory permissions. 2015-06-11 16:43:34,3, smsd: Cannot handle /var/spool/sms/outgoing/send_7tWfR2: Access denied. Check the file and directory permissions. 2015-06-11 16:43:34,3, smsd: Cannot handle /var/spool/sms/outgoing/send_W8EC06: Access denied. Check the file and directory permissions. 2015-06-11 16:43:34,5, huawei: Modem handler 0 has started. PID: 19025. 2015-06-11 16:43:34,3, smsd: Cannot handle /var/spool/sms/outgoing/send_leLTbh: Access denied. Check the file and directory permissions. 2015-06-11 16:43:34,5, huawei: Using check_memory_method 1: CPMS is used. 2015-06-11 16:43:34,6, huawei: Checking device for incoming SMS 2015-06-11 16:43:34,6, huawei: Checking if modem is ready 2015-06-11 16:43:34,7, huawei: -> AT 2015-06-11 16:43:34,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:34,7, huawei: <- AT OK 2015-06-11 16:43:34,6, huawei: Pre-initializing modem 2015-06-11 16:43:34,7, huawei: -> ATE0+CMEE=1;+CREG=2 2015-06-11 16:43:34,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:35,7, huawei: <- ATE0+CMEE=1;+CREG=2 OK 2015-06-11 16:43:35,6, huawei: Checking if modem needs PIN 2015-06-11 16:43:35,7, huawei: -> AT+CPIN? 2015-06-11 16:43:35,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:35,7, huawei: <- +CPIN: READY OK 2015-06-11 16:43:35,6, huawei: Initializing modem 2015-06-11 16:43:36,7, huawei: -> AT+CPMS="MT" 2015-06-11 16:43:36,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:36,7, huawei: <- +CPMS: 1,23,0,10,0,0 OK 2015-06-11 16:43:36,7, huawei: -> AT+CSQ 2015-06-11 16:43:36,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:36,7, huawei: <- +CSQ: 17,99 OK 2015-06-11 16:43:36,6, huawei: Signal Strength Indicator: (17,99) -79 dBm (Good), Bit Error Rate: not known or not detectable 2015-06-11 16:43:36,6, huawei: Checking if Modem is registered to the network 2015-06-11 16:43:37,7, huawei: -> AT+CREG? 2015-06-11 16:43:37,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:37,7, huawei: <- +CREG: 2,1, 2B85, 8F5 OK 2015-06-11 16:43:37,6, huawei: Modem is registered to the network 2015-06-11 16:43:37,6, huawei: Location area code: 2B85, Cell ID: 8F5 2015-06-11 16:43:37,7, huawei: -> AT+CSQ 2015-06-11 16:43:37,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:37,7, huawei: <- +CSQ: 17,99 OK 2015-06-11 16:43:37,6, huawei: Signal Strength Indicator: (17,99) -79 dBm (Good), Bit Error Rate: not known or not detectable 2015-06-11 16:43:37,6, huawei: Selecting PDU mode 2015-06-11 16:43:38,7, huawei: -> AT+CMGF=0 2015-06-11 16:43:38,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:38,7, huawei: <- OK 2015-06-11 16:43:38,7, huawei: -> AT+CIMI 2015-06-11 16:43:38,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:38,7, huawei: <- 250203801326408 OK 2015-06-11 16:43:39,7, huawei: -> AT+CGSN 2015-06-11 16:43:39,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:39,7, huawei: <- 354807047791561 OK 2015-06-11 16:43:39,5, huawei: CGSN: 354807047791561 2015-06-11 16:43:39,5, huawei: IMSI: 250203801326408 2015-06-11 16:43:39,6, huawei: Checking if reading of messages is supported 2015-06-11 16:43:39,7, huawei: -> AT+CPMS? 2015-06-11 16:43:39,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:39,7, huawei: <- +CPMS: "MT",1,23,"SM",0,10,"SR",0,0 OK 2015-06-11 16:43:39,6, huawei: Checking memory size 2015-06-11 16:43:40,7, huawei: -> AT+CPMS? 2015-06-11 16:43:40,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:40,7, huawei: <- +CPMS: "MT",1,23,"SM",0,10,"SR",0,0 OK 2015-06-11 16:43:40,6, huawei: Used memory is 1 of 23 2015-06-11 16:43:40,6, huawei: Trying to get stored message 1 2015-06-11 16:43:40,7, huawei: -> AT+CMGR=1 2015-06-11 16:43:40,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:40,7, huawei: <- OK 2015-06-11 16:43:40,6, huawei: Trying to get stored message 2 2015-06-11 16:43:41,7, huawei: -> AT+CMGR=2 2015-06-11 16:43:41,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:41,7, huawei: <- OK ...... ...... 2015-06-11 16:43:50,6, huawei: Trying to get stored message 22 2015-06-11 16:43:51,7, huawei: -> AT+CMGR=22 2015-06-11 16:43:51,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:51,7, huawei: <- OK 2015-06-11 16:43:51,6, huawei: Trying to get stored message 23 2015-06-11 16:43:51,7, huawei: -> AT+CMGR=23 2015-06-11 16:43:51,7, huawei: Command is sent, waiting for the answer 2015-06-11 16:43:51,7, huawei: <- +CMS ERROR: 321 (Invalid memory index) 2015-06-11 16:43:51,6, huawei: No SMS received (reading interrupted)

What can I do/check/edit to resolve the problem?

config
[huawei] device = /dev/ttyUSB0 baudrate = 115200 rtscts = no init = AT+CPMS="MT" incoming = yes

Huawei devices needs the modem setting:
memory_start = 0

Thanks for your product and fast support
Now it works perfectly!!!