NEC XN120 Feature Manual page 190

Features
n Operation
To set Dial Block:
1. At system phone, press a SPK key.
OR
At single line telephone, lift handset.
2. Dial 700.
3. Dial the 4-digit Dial Block code.
4. Dial 1.
A confirmation tone is heard.
5. Press SPK or replace the handset to hang up.
To release Dial Block:
1. At system phone, press a SPK key.
OR
At single line telephone, lift handset.
2. Dial 700.
3. Dial the 4-digit Dial Block code.
4. Dial 0.
A confirmation tone is heard.
5. Press SPK or replace the handset to hang up.
To set Dial Block from another extension:
1. At system phone, press a SPK key.
OR
At single line telephone, lift handset.
2. Dial 701.
3. Dial the 4-digit Dial Block code.
4. Dial the extension number to be blocked.
5. Dial 1.
A confirmation tone is heard.
6. Press SPK or replace the handset to hang up.
To release Dial Block from another extension:
1. At system phone, press a SPK key.
OR
At single line telephone, lift handset.
2. Dial 701.
3. Dial the 4-digit Dial Block code.
4. Dial the extension number to be released from Dial Block.
5. Dial 0.
A confirmation tone is heard.
6. Press SPK or replace the handset to hang up.
Features Manual
188