California Relay Service
http://www.ddtp.org/california_relay_service/
California Relay Service (CRS) provides specially-trained operators to relay telephone conversations back and forth between people who are deaf, hard of hearing, or speech-disabled and all those they wish to communicate with by telephone. This CRS page offers useful information about how to use the relay service, relay service providers, 711 Choice and Customer Profiles.
Simply dial 7-1-1 to reach CRS.
CRS is available 24 hours a day, 7 days a week, to assist with calls. You can make as many calls as you wish and talk as long as you like. There is no extra charge to use the relay service. All operator services, including directory assistance, are also available via CRS.