The invention provides a implementing calling method: dialing and called users all belongs to the capital office, when essential calling starts, flexible switcher should check out whether the called user is the one who partakes the fee with the dialing user, in that condition, dialing user and called user are informed after called user stopping the phone call, the calling should be mutual costing according to a ratio; if either dialing user or called user stops the call before informing finished or timer's timeout, none of them needs to give the payment; if neither dialing user nor called user don't stop the call after informing or timer's timeout , flexible switcher puts through the call and start it and gives two pieces of SMDR according the costing proportion, sending to accounting center. |