# Keep alive or heartbeat

**URL:** <https://forum.sierrawireless.com/t/keep-alive-or-heartbeat/1262>\
**Category:** Legacy AirPrime modules\
**Created:** [April 17, 2007, 12:22am UTC](https://forum.sierrawireless.com/t/keep-alive-or-heartbeat/1262 "2007-04-17T00:22:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rotoscano](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@rotoscano](https://forum.sierrawireless.com/u/rotoscano)\
**Post date:** [April 17, 2007, 12:22am UTC](https://forum.sierrawireless.com/t/keep-alive-or-heartbeat/1262/1 "2007-04-17T00:22:35Z")

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Does anybody knows if there a TCP/IP heartbeat or keep alive implemented in the GR64? and if so, if it is documented?

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**Author:** ![chrdcv](https://avatars.discourse-cdn.com/v4/letter/c/71e660/32.png) [@chrdcv](https://forum.sierrawireless.com/u/chrdcv)\
**Post date:** [May 20, 2007, 3:20am UTC](https://forum.sierrawireless.com/t/keep-alive-or-heartbeat/1262/2 "2007-05-20T03:20:37Z")

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Simple! At fix time, send a dummy data to keep the conexion!