# GL8200 TCPPAD Listening Server
**URL:** https://forum.sierrawireless.com/t/gl8200-tcppad-listening-server/8744
**Category:** GL Series
**Created:** [August 23, 2016, 7:26pm UTC](https://forum.sierrawireless.com/t/gl8200-tcppad-listening-server/8744 "2016-08-23T19:26:03Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@datawest1234](https://forum.sierrawireless.com/u/datawest1234)
#### Post date: [August 23, 2016, 7:26pm UTC](https://forum.sierrawireless.com/t/gl8200-tcppad-listening-server/8744/1 "2016-08-23T19:26:03Z")
Hi,
I’m looking through the AT Commands for the GL8200 and I do not seem to find any reference to a TCPPAD Listening Server setup. Can you tell me what commands we would use to set this up?
We have a remote data collection unit that can not be programmed, so the modem has to be programmed to have a TCP Server session running at all times and accept an incoming connection on a specific port number. Then all serial data in both directions is encapsulated via PAD and sent over the TCP connection. This is a common feature of many cellular modems and routers.
Is there also a feature of the modem turning its self off then powering up based on the built in RTC and alarm settings?
Thank you,
Roy W.
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### Author:  [@Rex\_alex](https://forum.sierrawireless.com/u/Rex_alex)
#### Post date: [August 29, 2016, 9:12am UTC](https://forum.sierrawireless.com/t/gl8200-tcppad-listening-server/8744/2 "2016-08-29T09:12:24Z")
Hi,
What i comes to know from sierra is, the SSL/TLS socket over TCP with be integrated along the TLS1.2 support in the next official release.
Regarding
> [@](#):
>
> Is there also a feature of the modem turning its self off then powering up based on the built in RTC and alarm settings?
, I guess you are referring sleep mode. You can refer ‘21.18. Sleep Mode Management’ in AT command guide.
-Alex