Star service and other codes used to access additional network services on a telephone line. Some of these services work on any line; some services have to be ordered as they are not generally included in standard line rental charges.
Star Service codes
These codes work on analogue lines only; they do not work on ISDN lines or SIP trunks.
Service
Set
Check
Cancel
Divert all calls
*21*<number>#
*#21#
#21#
Divert calls when not answered within 15 seconds
*61*<number>#
*#61#
#61#
Divert calls when line is busy
*67*<number>#
*#67#
#67#
Call waiting
*43#
*#43#
#43#
Reminder call (single)
*55*<time in 24-hour format>#
*#55#
#55#
Reminder call (repeated)
*56*<time in 24-hour format>*<option (see below)>#
*#56#
#56#
Ring back
5 (when a called number is busy)
#37#
Check which services are active
*#001#
Reminder call options
1
Every Monday
2
Every Tuesday
3
Every Wednesday
4
Every Thursday
5
Every Friday
6
Every Saturday
7
Every Sunday
8
Every weekday
9
Every day
Codes for other services
Code
Description
1471
Announces the telephone number of the last incoming call received1,2,3
141 <number>
141 dialled as a prefix to a telephone number withholds the calling party's number from the called party
1470 <number>
1470 dialled as a prefix to a telephone number presents the calling party's number to the called party when calling from a line where the number is withheld by default
17070
Announces the telephone number associated with the line (BT lines only)
174
Announces the telephone number associated with the line (Virgin Media lines only)
Does not work on multiline (2 or more analogue lines that share the same number).