I always experience this error but how to reduce the retrying interval. After 10 secs, the modem response is ok.
I am using wavecom fasttrack modem. need-sleep = true sendline-sleep = 200 2008-05-23 12:08:37 [790] [10] DEBUG: send_msg: sending msg to box: <127.0.0.1> 2008-05-23 12:08:37 [790] [10] DEBUG: boxc_sender: sent message to <127.0.0.1> 2008-05-23 12:08:37 [790] [9] DEBUG: boxc_receiver: got ack 2008-05-23 12:08:39 [790] [9] DEBUG: boxc_receiver: sms received 2008-05-23 12:08:39 [790] [9] DEBUG: send_msg: sending msg to box: <127.0.0.1> 2008-05-23 12:08:41 [790] [6] DEBUG: AT2[ttyS0]: --> AT+CPMS?^M 2008-05-23 12:08:41 [790] [6] DEBUG: AT2[ttyS0]: <-- +CME ERROR: 515 2008-05-23 12:08:41 [790] [6] ERROR: AT2[ttyS0]: Generic error: +CME ERROR: 515 2008-05-23 12:08:41 [790] [6] DEBUG: failed to send mem select command to modem -1 2008-05-23 12:08:41 [790] [6] DEBUG: AT2[ttyS0]: memory check error 2008-05-23 12:08:41 [790] [6] INFO: AT2[ttyS0]: closing device 2008-05-23 12:08:41 [790] [6] ERROR: AT2[ttyS0]: Couldn't connect (retrying in 10 seconds). 2008-05-23 12:08:43 [790] [9] DEBUG: boxc_receiver: heartbeat with load value 0 received 2008-05-23 12:08:51 [790] [6] INFO: AT2[ttyS0]: opening device 2008-05-23 12:08:51 [790] [6] DEBUG: AT2[ttyS0]: device opened 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: device opened 2008-05-23 12:08:52 [790] [6] INFO: AT2[ttyS0]: init device 2008-05-23 12:08:52 [790] [6] INFO: AT2[ttyS0]: speed set to 9600 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: --> ATZ^M 2008-05-23 12:08:52 [790] [8] DEBUG: Dumping 1 messages to store 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: <-- +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Generic error: +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Wrong or no answer to ATZ, ignoring 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: --> AT^M 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: <-- +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Generic error: +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Wrong or no answer to AT. Trying again 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: --> AT^M 2008-05-23 12:08:52 [790] [6] DEBUG: AT2[ttyS0]: <-- +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Generic error: +CME ERROR: 515 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Second attempt to send AT failed 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Opening failed. Terminating 2008-05-23 12:08:52 [790] [6] INFO: AT2[ttyS0]: closing device 2008-05-23 12:08:52 [790] [6] ERROR: AT2[ttyS0]: Couldn't connect (retrying in 10 seconds). 2008-05-23 12:09:02 [790] [6] INFO: AT2[ttyS0]: opening device 2008-05-23 12:09:02 [790] [6] DEBUG: AT2[ttyS0]: device opened 2008-05-23 12:09:03 [790] [6] DEBUG: AT2[ttyS0]: device opened 2008-05-23 12:09:03 [790] [6] INFO: AT2[ttyS0]: init device