Precautions
Precautions and prohibitions for Ad Insertion
 
Ad Insertion Rules
Telephone numbers
Register a number which starts with any of the following area codes.
(1)
Reverse charge telephone number (Toll-free)
0120
0800
0078
(2)
Nationally-standardized telephone number (“Navidial”)
0570
(3)
Area code for landline phone, etc.
050
(4)
Business identification number
0066-9
(5)
Area code for landline phone, etc.
National area codes
Cautions
Advertisers using the Call Extensions should respond to calls regardless business hours. If advertisers are incapable of answering incoming calls, an automatic telephone message   identifying the primary contractor should be set to answer.