SMS Relay

How it works

diagram of SMS Relay user typing his side of conversation.

View demo


  1. Send an SMS on your mobile phone to 0423 677 767 with the area code and number of the person you want to call.
  2. Your SMS will go to an NRS relay officer who will ring the other person and say they that they have a call to relay to them.
  3. You then text your message to the other person and the relay officer will text the other person’s response back to you
  4. You can respond in turn with another SMS. 
  5. The relay officer stays on the line to the other person and the call continues for as many turns as needed.


pic of mobile phone

All you need is a mobile phone. You don’t need to have internet access or a data plan.

You type your side of the conversation as a series of SMS text messages on your mobile phone and read the responses from the other person, typed by the relay officer, also on your phone.

Relay officers are the central link in the phone call. They stay on the line throughout each call to help it go smoothly, but do not change or interfere with what each person says.

What does it cost?

Call costs depend on the type of plan you have for your mobile phone. Each SMS to the NRS will cost the same as any other SMS you send.

Some things to remember about SMS Relay

  • You aren’t restricted to using a fixed-line TTY or a computer. You can make a call on the move – away from your home or office.
  • Type ‘GA’ (Go Ahead) at the end of each message. This helps the relay officer know that you have finished your turn and are waiting for a response.
  • Wait for the relay officer to type ‘GA’ when they are texting you, before you send your response.
  • SMS Relay is most useful for sending a simple ‘message’ or having a simple two or three-turn conversation.
  • SMS Relay isn’t a continuous call. It’s a stop-start process. Mostly it’s fast but sometimes it can take many minutes or even hours before an SMS is delivered.   This means it’s not always so useful for long conversations.
  • In SMS Relay there is a person waiting on a phone for your responses at the other end of your call. Please consider the other person so they aren’t waiting too long.
  • In emergencies, SMS relay should be a last-resort call. There is no priority for SMS messages to the NRS on the mobile network. Internet Relay calls to Triple Zero are likely to be more reliable.

More info

Try our call tutorial to find out what an SMS Relay call is like without actually making one.

See also our SMS Relay FAQs and tips for making SMS Relay calls.

See the step-by-step tab here if you want to call an SMS Relay user.

See our SMS Relay factsheet.

Make a call and give us some feedback about what you think of SMS Relay.

Make an Internet Relay call Make a Captioned Relay call

24-hour relay call numbers

  • TTY/voice calls

    133 677

  • Speak & Listen

    1300 555 727

  • SMS Relay

    0423 677 767

Make other relay calls
– all the numbers you need
SMS relay has been great for me. I use it for appointments, and to make quick calls. It's a lot easier and quicker then via the computer."


Sippy Downs, Queensland