release-19.4:Backport!3123

Merged Andrey Vertiprahov requested to merge cherry-pick-8d9601b2 into release-19.4

fix Alcatel 7302 serial

See merge request !3123 (merged)

(cherry picked from commit 8d9601b2)

1e0ecfcc fix Alcatel 7302 serial 4df928bd fix Alcatel 7302 serial. black

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