A user dials *57*TN# to register the call forwarding unconditional (CFU) service. The service takes effect. Then the user dials #57# but fails to cancel the service.
Figure 3-2 shows the network.
Figure 3-2 Network for canceling the CFU service
Step 1 Run the show sip convert23tosharp switch command to check whether the function of converting the number sign (#) is disabled.
Step 2 If the function is enabled, run the config sip convert23tosharp flag off command to disable it.
Step 3 If the fault persists, contact Huawei technical support engineers.
The possible cause is that the SoftCo configuration is incorrect.