ERS is a tobacco free facility. Phone (877) 275-4377 (Toll-free) TTY: 711 or (800) 735-2989 8 a.m. – 5 p.m. CT, Monday – Friday. Mailing Address. P. O. Box 13207 Austin, TX 78711-3207. Fax (512) 867-7438 When you need to send a fax to ERS, please include a cover sheet that includes only: Your name, Your contact information,