Zello Gateway that does COR

[WQUX891]

Does anyone have experience with the Solidtronic ST-RoIP4?  We are currently using the RoIP1, but it is VOX and has a tendency to clip conversations when someone pauses.  The RoIP4 says it uses COR; but, is that only for Zello Work, or does it do COR with the free Zello account?

http://www.solidtronic.com/cms/?PRODUCTS___ST-RoIP4_Series_RoIP_Gateway

Secondarily, does anyone know of any other COR Zello interface that you don't need Zello Work to use?  The RoIP4 is quite expensive!  

Thank you,

 

[JeepCrawler98]

If you have a spare PC you can use Zello in gateway mode and have it handle COR/PTT signalling via the com port - this is cheaper than the Solidtronic approach but arguably also a bulkier piece of equipment: https://support.zello.com/hc/en-us/articles/230749207-Enabling-radio-gateway-mode-in-Zello-for-Windows-free-app

You just need to add some +5V pull up resistors to the com port signaling and it'll work just fine.

You might want to get a hold of Cory or Buddy with the Midwest GMRS group - I know they're using the SolidTronic for their Zello gateway.

Edited September 9, 2021 by JeepCrawler98

[WQUX891]

Thank you!  I have been able to modify the Windows program to get into gateway mode.  Would you happen to have a schematic of what you did?

Also, would you know what these mean, since there is no help menu:

-In TX Signal: RTS or DTR

-In RX Signal: CTS, DSR, Ring, CD

I am assuming the following, but this is my best guess:

RTS = Radio Transmit Signal (PTT?)

DTR = ???  Something Transmit Relay???

CTS = Continuous Tone Squelch

DSR = Digital Squelch Receive?  (DCS?)

Ring = ???

CD = ???

We are using DCS, so I am assuming my settings would be DTR and DSR; but, I have no idea.

Thank you for your help!

 

[Radioguy7268]

Search up some stuff on the RS-232 data standard, and I think it will help you.

CD = Carrier Detect

RTS = Request to Send

CTS = Clear to Send

DTR = Data Terminal Ready?

DSR = Data Set Ready?

Ring = ??? Detect ringing voltage on the line?

It's been too many years since I messed around with doing Modem stuff over radio channels. At one time it seemed like the future for SCADA control. That was a LONGGGG time ago.

[WQUX891]

Ah, thank you!  I was trying to equate radio terms into RS-232.  It has been a long time since I've thought about anything like that!  

[trafficcop]

Any chance on getting a schematic for the com port keyer. I made one probably about 15 years ago and for the life of me cannot find it. jamie@swohgmrs.org