If you have a Caller ID display unit, you may wish to enable Calling Line Identification (CLI). To do that;
1.
Pick up the handset of the telephone you wish to have CLI on.
Listen for a dial tone.
2.
Dial *45#.
3.
To disable CLI, repeat the above procedure but dial #45#
instead of *45#.
1.
Pick up the handset of the phone you wish to make the call on.
2.
Dial 1831 and without hanging
up, immediately dial the phone number you wish to call. Your phone number will not be sent to the person you called.
1.
Pick up the handset of the phone you wish to make the call on
2.
Dial 1832 and without hanging
up, immediately dial the phone number you wish to call
3.
Your phone number will be shown to the person you called if their
equipment allows it.