How to recall the SFC ratio of a private branch exchange

摘要

The present invention relates to a method of recalling a call to a private branch exchange, which is suitable for recalling a call to a private branch exchange in accordance with a function of the private branch exchange, There is no method of recalling a call forwarded to a subscriber registered with a SIP non-function for a call transmitted from a private guide, according to the prior art. However, in the present invention, The S / P non-recall function is enabled by the guide board 10, so that the guide field of the private guide 10 can easily know the type of the recalled call, so that the guide amount is appropriately more efficiently and actively applied to the private guide 10 In service can be made possible, and the aforementioned drawbacks can be improved.