SMS processing chat

Casual chatting is free of local calls between members of the group. The chat group consists of a main card and 1-4 membership cards. The function fee is 3 yuan/month/card, which is uniformly paid by the main card = 3 yuan × number of members in the group. = = = = = = = There is no time limit for dialing, as long as it is answered locally. OK = = = = = = = = = difference between him and his best friend is that his best friend can only deal with customers in the dynamic zone, but there is no restriction, as long as they are customers of the three existing brands. (One number can only participate in one group) = = = = = SMS processing method: the main card customer applies to send kth db+space+ membership card to 10086 to apply for free chat; Membership card customers apply for membership by sending Jr hdb++ space+ master card to 10086. The main card sends QXHDB to 10086 to cancel the chat; The membership card sends tch db++ space+ the main card that has joined the group to 10086 to quit the group.