Some sierra modems (e.g. MC7710) have a secondary port that likes to reply OK to any AT command passed. Detect that as soon as possible, and don't consider the Icera port probing result from that secondary port.
Some sierra modems (e.g. MC7710) have a secondary port that likes to reply OK to any AT command passed. Detect that as soon as possible, and don't consider the Icera port probing result from that secondary port.