TCP getting disconnected after sending 14 packets

Dear,
I am using Sierra Wireless Airprime module GSM GPS HL6528-G2.8V, in which i am facing issue as follows:

  1. I am initializing GSM and GPS module, after that i am taking frames from GPS module filling it in proper format , forming a required packet of 104 bytes. Then getting connected to TCP ,sending packet over TCP, Diconnection to TCP.
    This TCP connection , Packet sending over TCP and disconnection to TCP is continuous with 1 minute of time interval inbetween.
    My problem is ,it is sending only 14 packets in this format: by Connecting to TCP, sending of packet and disconnection to TCP. After sending 14 packets it is getting disconnected to TCP automattically.
    Following are the output logs i have captured:

AT+CMGF=1

OK
AT+CSCS=“GSM”

OK
AT+CNMI=2,2,0,0,0

OK
AT+KCNXCFG=1,“GPRS”,“RCOMNET”,“adda”,“1234”,“0.0.0.0”,“0.0.0.0”,“0.0.0.0”

OK
AT+KTCPCFG=0,0,“50.116.14.45”,9595

+KTCPCFG: 1

OK
START
AT+GPSSTART=1

OK
+GPSEVINIT: 1
+GPSEVSTART: 1
AT+GPSPVT=1,8,11

CONNECT
+GPSEVPOS: 0
START

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

OK

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m
AT+KTCPSTART=1
AT+KTCPSTART=1

CONNECT
$SIS,SIS50,1,N,0,0,0,0,0,0,0,0,0,0,00.000000,00.000000,0,0,000000,000000,0,0,0,0,3,0,0,0,0,0,0,0,0,1,!Received

OK
AT+KTCPCLOSE=1,1

OK
+++AT+GPSSTART=1

OK
+GPSEVSTART: 1
+GPSEVPOS: 0
AT+GPSPVT=1,8,11

CONNECT

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m

OK

+GPSPVT: 0,00:00:00,00/00/0000,NO FIX,N 00 00’00.00",E 000 00’00.00",+0000m
AT+KTCPSTART=1
AT+KTCPSTART=1

CONNECT
$SIS,SIS50,2,N,0,0,0,0,0,0,0,0,0,0,00.000000,00.000000,0,0,000000,000000,0,0,0,0,3,0,0,0,0,0,0,0,0,1,!Received

OK
AT+KTCPCLOSE=1,1

OK

in this format only 14 packets are getting sent and TCP getting disconnected after 14 packets.

Please help me to come out of this issue.
Reply.

Thank you.
Chetan Jadhav

Topic moved to the correct section.

Thanks,
Moderator

I think I have the same problem, can no longer connect to the modem after 14 connects/disconnects. Any news on this?