Editing Call forwarding (section)

===Europe===
Most EU fixed-line carriers use the following codes based on [[European Conference of Postal and Telecommunications Administrations|CEPT]] and [[European Telecommunications Standards Institute|ETSI]] standards developed in the 1970s on both [[Plain old telephone service|POTS]] and [[ISDN]] lines. (There may be some variation to these, but the unconditional code *21* is very much universally standard on EU telephone lines.) The general syntax for all European service codes always follows the pattern below:

{| class="wikitable"
|+Unconditional forwarding
!Forward service!!Activate!!Cancel & Retain!!Reestablish!!Status
|-
|If busy || align="center" | *69*[phone number]# or<br>*67*[phone number]# || align="center" | #69# or #67# || align="center" | *69# or *67#|| align="center" | *#69# or *#67# 
|-
|If not answered || align="center" | *61*[phone number]# || align="center" | #61# || align="center" | *61#|| align="center" | *#61# 
|}