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Occasional Outgoing Call Failure from the Switchboard Number When the SoftCo Is Connected to the IMS

Publication Date:  2015-07-15 Views:  432 Downloads:  0
Issue Description
After the SoftCo5816 is connected to the IMS, some users in the user box of the SoftCo5816 fail to initiate outgoing calls and hear an announcement indicating that the call cannot be connected. At the office, four switchboards are configured and extensions in other three switchboards are normal. Only some phones in the switchboard 865966032778 fail to make outgoing calls, and the phones have long numbers.
Handling Process
Step 1 Check whether the multi-call permission is granted for the switchboard number that the carrier provides for the SoftCo on the carrier network. If the multi-call permission is not granted, contact the carrier to grant it.

Step 2 If the fault persists, contact Huawei technical support engineers.

Root Cause
The possible cause is that the multi-call permission is not granted for the switchboard.