Ymodem transmit fails when 10 NAK's received

[Bty_User]

Good afternoon,

I'm very new to Aspect and have found it useful for a particular project. I've scraped together some suggestions on this forum to develop my current script (much appreciated). I'm now struggling with YMODEM transfers to a handheld PC over a phone line. I believe my script is correct, I'll attach it below. The script is able to receive files using YMODEM that are relatively small in size (.5MB). Transmitting larger files (8MB) causes the YMODEM pop up to get roughly 20% through then it begins to receive NAK's and the handheld PC shows an error "Too many errors during transmission" and the connection terminates. I have tried setting DTR allowances very high using AT commands with no success. I can provide the current modem settings if needed also.

When transmitting the file via YMODEM and the unit connected via a serial dock and modem out of the equation, the transfer works every time.

Also, I cannot figure out how to send my script back to the beginning after the transfers finish.

Any help would be appreciated.

Thank you.

 

[Bty_User]

Bump. Hope someone can chime in eventually!