RV-55 User Guide lists Serial Connector Pinout PIN 2(RECV) and PIN3(TRNSMT) . Is this truly reversed from RV-50, LS-300, and older modems ? or is it a typo in the RV-55 User Guide? Having issues with this RV55 modem for serial passthrough replacements of older 3G modems RavenXT and LS300s.
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For serial port pins on RV55 Airlink and RV50 Airlink, please refer to the two documents following to the link below:
For RV55 Airlink, please refer to Section 2 - Installation and Startup on page 21:
For RV50 Airlink, please refer to Section 3 - Installation and Startup on page 25: