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Motorola STS Software Error Code #1234
Solution for Motorola STS Software, error code #1234
By Fred Chwalek on 28 November, 2018 - 4:11 pm

Using ACE3600 RTU. Processor locked up, had to reboot. Found error code:
Error #1234: Chnltest -Tx Task Failed Transmit Frame. trnsintr_tx_frame() Returns : %%
Can not transmit a frame via Transport MUX. May indicate system software problem. Consult product group.

No clue what this means. Any ideas how to fix or keep this from happening in the future?

The error code suggests that the unit cannot transmit any data because the transport mutilplexer is not functioning properly. You need to contact Motorola on this one.