□ East this reporter Zhang Yaping 
 phone before dialing a designated number, such as over a telephone call-back phone number you want to dial, call one minute only 3 cents. Ms. Lo also glad that they met years ago, a good thing, but yesterday, depressed: the specified number allocated barrier,Puma Cell Shoes, while the $ 50 bill their stored there 30 yuan useless it. 
 reporter yesterday found that Ms. Lo is encountered, This card is currently prohibited in Zhengzhou have sales, sales through well-designed, so many people stored calls; but the card may be canceled at any time, stored calls often failed to be implemented. 
 stored cost 20 yuan 50 yuan would not be used 
 Zhengzhou Lo is open clothing store. Years ago,Bugaboo Cameleon stroller, the store salesman to sell her phone card,Puma Trionfo shoes, said card with a call one minute that as long as 3 cents, a salesman also field test. 
 calls stored, the salesman gave Lo two reservation number. Salesman said, Lo call before calling any reservation number, there will be call-back over, connected Lo dial their number to be dialed can be, and phone calls from the $ 50 bill in the stored net. 
 years ago, the call has been normal, yesterday, Ms. Lo and then call the reservation number two, but could not get through. Lo said he stored the $ 50 bill still 30 yuan useless it. 
 survey 
 most favorable claim 1 yuan package to fight one day 
 this how it was? Insiders told the East this reporter, this is actually a 
 correspondent in the online search for the 
 reporters in Zhengzhou as a university student, wanted to agents on the grounds, contact on the road in Zhengzhou Zijingshan a shop. 
 boss said he was selling this card is very favorable, 1 per package to fight one day telephone. This card, and Lo bought the card to use the same. 
 boss admitted that it is back card. 
 addition to a 1 per package to play one-day card, the owner also sells other card, regardless of long distance telephone in just 4 cents per minute. 
 More than the current card sales in the college campus, is the largest low-cost benefits. 
 As for stored calls, the calls did not run out of numbers to get through the case of an appointment, this boss says he does not exist here, which he launched with the joint communications operators business. The reporter consulted several major telecommunications carriers, the other side that did not had any joint development of such business. 
 saying 
 this Reporters were investigated. 
 an industry source said, is to use a callback card carrier interconnection Talk time less than 6 seconds without billing settlement rules. However, the owner of a sales call-back card that they mainly use the Internet phone. Low-cost Internet telephony, back to the relatively low rates allocated to the user, the user is out of Internet phone costs. 
 but no matter which way through, write-back cards are prohibited by the state. Former Ministry of Information Industry early in February 2007, after the reorganization of the Ministry of Industry and Information Technology in 2010 also had issued a document for a full shut down back card business. 
 Therefore, these operators are 
 Provincial Communications Authority, said a staff member if there is really such a situation, they will strengthen supervision over the market, but also want users to be vigilant to avoid falling into the trap back card. D 
 provide clues News Hotline Lo (0371) 65830000