# \[Hilo\]max re-transmission time to send a packet data

**URL:** <https://forum.sierrawireless.com/t/hilo-max-re-transmission-time-to-send-a-packet-data/6552>\
**Category:** HL Series FAQ\
**Created:** [July 23, 2013, 5:44am UTC](https://forum.sierrawireless.com/t/hilo-max-re-transmission-time-to-send-a-packet-data/6552 "2013-07-23T05:44:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FAQ\_Poster](https://avatars.discourse-cdn.com/v4/letter/f/f9ae1b/32.png) [@FAQ\_Poster](https://forum.sierrawireless.com/u/FAQ_Poster)\
**Post date:** [July 23, 2013, 5:44am UTC](https://forum.sierrawireless.com/t/hilo-max-re-transmission-time-to-send-a-packet-data/6552/1 "2013-07-23T05:44:06Z")

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[Hilo] What’s the max re-transmission time for sending a packet data when a sudden power off of the remote server?

Answer: if the sudden power off happens during data sending, then the URC “+KTCP\_ACK: 1,0  
Or ”“+KTCP\_NOTIF: 1,5” appears after 6.2 minutes. For example:  
AT+KTCPSND=1,5 —Remote server is powered off or un-plug the network cable, the client still try to send data.  
CONNECT  
 —Module TCPIP stack will try 8 times to re-transmission the TCP data, maximum about 6.2 minutes.  
OK  
+KTCP\_ACK: 1,0 – The URC will occur after the retry timeout at the end  
+KTCP\_NOTIF: 1,5  
AT+KTCPCFG?  
+KTCPCFG: 1,0,0,0,“192.129.135.101”,179,1,1 —“disconnected” status for the session  
OK