User unreachable call transfer means that when the user’s mobile phone is turned off, is not in the effective service area, has no response, is busy, or has poor signal, normal calls cannot be made; call transfer is a This service has four modes, namely unconditional call forwarding, busy call forwarding, no answer call forwarding and unreachable call forwarding.
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User unreachable call transfer means when your mobile phone is turned off and is not valid Normal calls cannot be achieved if the call is within the service area, has no response, is busy, or has poor signal.
Call forwarding is a service that transfers calls. To put it more vividly, for example, mobile phone A (the calling party) calls mobile phone B (the called party). The call is ringing not from mobile phone B but from mobile phone C (the transferred caller). ). This is call forwarding. Call forwarding is a basic telecommunications service that is available on any mobile phone.
Call forwarding is a service. This service has the following four modes: CFU, call forwarding unconditionally, CFB, call forwarding when busy, CFNRy: call forwarding on no answer, CFNRc: call forwarding unreachable.
When the user activates conditional call forwarding, the call forwarding can only be triggered when "the conditions are met". For example, if the user activates forward-on-busy, then the call connection is normal at first. However, it turns out that the user's status is "busy", and then a new call is initiated from the MSC where user B is located, and the call is transferred to number C.
There is a special "condition" in this, which is to shut down the computer. Since the user's shutdown status can be directly queried in the HLR, the connection process of shutdown call forwarding is the same as that of unconditional call forwarding.
Take China Unicom as an example:
You can activate or cancel call transfer through the following channels:
1. You can log in to the online business hall http://iservice.10010.com /Click to do business > Basic services > Call transfer number settings;
2. After logging in to the mobile business hall client, click Process > Business processing > Call transfer settings;
3. Log in to the mobile phone In the touch screen version of wap.10010.com in the business hall, click Process > Business Processing > Call Transfer Settings;
4. Just enter the relevant instructions in the standby state of the mobile phone to make the call. Since there are not many setting instructions in various cities, Similarly, you can consult local customer service for specific instructions.
In addition to the above methods, you can also dial the local 10010 hotline or go directly to the business hall to handle the call transfer service.
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