Introduction: China Telecom's 20 1 telephone service (calling card mode) is a password charging telephone service opened on the intelligent network. The service access number is 20 1, which has the following characteristics:
Convenience: you can make local, domestic and international calls on any dual-tone phone in the province (ic card phone, hotel extension, ordinary landline, PHS);
Intelligence: When using 20 1 phone to make a call, the call charge is deducted from the 20 1 phone card held by the user, and there is no charge for making a call;
Cheap: users dial 0.22 yuan /3 minutes in the business area and 0.30 yuan/minute in the area, and there is no long-distance surcharge for long-distance calls.