BT Star Service Code Information

Please find help below for BT Star Service Codes, which are required to set up and cancel BT call diversion, call baring, call waiting and other services.


Service DescriptionService Code
Check which services are active [System X]*#001#
Charge advice (before call)*40* (Number)
Charge advice (All calls)*411#
Charge advice (During call) "R"(to hold call)*40#(Call will be reconnected)
Cancel all calls charge advice#411#
Reminder call*55*(Time in 24 hour format)#
Cancel reminder call#55#
Call Divert - all calls - activate*21*(Number to divert to)#
Call Divert - all calls - to check*#21#
Call Divert - all calls - to cancel#21#
Call Divert - on busy - to activate*67*(Number to divert to)#
Call Divert - on busy - to check*#67#
Call Divert - on busy - to cancel#67#
Call Divert - on no reply - to activate*61*(Number to divert to)#
Call Divert - on no reply - to check*#61#
Call Divert - on no reply - to cancel#61#
Call waiting on*43#
Call waiting off#43#
Call waiting - to check condition*#43#
Call waiting - to answer 2nd callerRecall + 2
Call waiting - remove beeps during callRecall + 0
Ring back (Number called is busy)5
Cancel ring back#37#
Caller display on*234#
Caller display off#234#
BT call-minder (voicemail)1571
Check last number that called1471
Release CLI1470 + dialled number
Withhold CL141 + dialled number
Access "Choose to refuse"14258
Call barring on (outgoing)*341 + option number #

options are:

1 = allows 999 and operator

2 = allows 999 and local

3 = allows 999 and STD

4 = bars all operator calls

5 = bars *

6 = bars premium adult lines

7 = bars premium information lines)
Call barring off (outgoing)#341*(PIN code)#
Incoming calls barred off [System X] #261#
Incoming calls barred on*261#
Incoming calls barred off #261*(PIN code)#
Check which services are active [System X] *#001#
Call Diversion (all calls)*#21#
Call Barring (incoming)*#261#
Call Barring (outgoing)*#34#
Call Charge Advice on all calls*#411#
Call Waiting*#43#
Code Calling*#51*code#
Reminder Call*#55#
Regular Programme [System X]*#56#
Call Diversion (no reply)*#61#
Call Diversion (on busy)*#67#
Three way callingSet up your first call, then press "R" to put first your call on hold and set up second call, Pressing "R" then 3 will set up three way (conference) call.

To end the first call, use Recall + 3

To end the second call, use Recall + 7

Some of these services are chargeable on a “Per use” basis, others are subscribed services which BT would provide for an extra charge on your bill.