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A short overview of commonly used BT short codes for managing your calls. Including divert, ring back, call waiting etc.

BT Divert is frequently used by our customer to divert calls they wish to be answered by us. For example, in situations where the call rings for 15 seconds and it is not answered the call diverts to Need More Time.


A phone line with BT and a touch tone phone.


Call Diversion

Divert your calls to another number when your away from your phone.

Diverting your calls* code * phone number to diver to #
Checking your diversions* # code #
Switching off# code #

Where code above is replaced by the codes shown.

21 divert all calls
61 divert calls you don't answer within 15 seconds
67 divert calls when your phone is engaged

Call Waiting

Tells you when other calls are trying to get through.

Note: You will hear a beep when someone is trying to call when you are on the phone.

Switching on* 43 #
Speaking to your 2nd callerRecall
Returning to your 1st callerRecall
Checking that it's on* # 43 #
Switching off# 43 #

Ring Back

Calls to let you know when an engaged number becomes free.

Note: Ring back will try up to a maximum of 45 minutes.

Setting upPress 5 on hearing an engaged tone and wait for confirmation.
Answering a Ring BackPick up handset when you hear special ring
Checking* # 37 #
Cancelling# 37 #


Tells you the last number that called you.

Finding out the number1471
Calling the number back3

Call Barring

You can bar certain types of calls from being made from your phone or bar incoming calls.

Barring all calls to your phone
Barring* 261 *
Cancelling# 261 #
Checking* # 261 #

Barring calls from your phone
Barring* 34 code *
Cancelling# 34 code * PIN #
Checking* # 34 #

Where code above is replaced by the codes shown.

1Bar almost all calls including BT Answer 1571 and Call minder
2Bar national and international calls and calls to mobiles
3Bar international calls
4Bar all operator calls, BT Text and BT Text Direct
5Bar calls to number with a * or # in them. (Includes some calling features, but allows you to cancel this option)
7Bar calls to premium rate numbers

Calls that are NEVER barred.

999Emergency services
112Emergency services
150BT residental customer services
151BT residental fault reporting
152BT business customer services
154BT business fault reporting
144BT Chargecard
0800Free numbers
0500Free numbers

Further Information

For further information please visit the BT website or the BT Products & Services website


BT Products & Services Guide

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