** Shares of telecommunications firm Lumen Technologies

rise 4% to $7.9 in after-hours trading

** LUMN raises annual free cash flow forecast, as weakness in its legacy business drags quarterly results

** Expects annual free cash flow between $1.2 bln and $1.4 bln, up from prior forecast of between $1 bln and $1.2 bln

** Revenue falls nearly 12% to $3.22 bln for Q3, in line with expectations, according to LSEG-compiled analysts' estimate

** LUMN has risen ~316% YTD

(Reporting by Juby Babu in Mexico City)

((Juby.Babu@thomsonreuters.com;))