Hi everybody!
I would like to share with you a case where incoming calls to an intra-office number are failed to forward to an outer-office number on the eSpace U1960, and how to solve this. Hope you find it useful!
Symptom
Software parameters 269 and 378 are set to 1. When an outer-office mobile phone user dials a direct dialing in (DDI) number or the virtual user (VU) access code, the call can be successfully transferred to an outer-office number. When an outer-office user dials an eSpace U1960 intra-office number enabled with the call forwarding service, the call fails to be forwarded to the specified outer-office number. When an intra-office user dials the intra-office number, the call is successfully forwarded to the outer-office number. Release code 169 is generated, indicating a temporary fault.
Possible Cause
The carrier authenticates calling numbers. If a forwarded-to number is out of the number segment specified by the carrier, the carrier rejects the call.
The number type contained in the SETUP message is incorrect. Therefore, the carrier rejects the call.
Solution
Check software parameter 269. The software parameter has been set to 1. Therefore, the intra-office number is sent to the carrier as the calling number. The first possible cause can be excluded because the intra-office number can make outgoing calls.
Compare the SETUP messages for a successful and a failed call.
The first figure shows the SETUP message generated when the intra-office number forwards an incoming call from an outer-office mobile phone number to an outer-office number but the carrier rejects the call. In the Calling party number section, Type of number is National number.
The second figure shows the SETUP message generated when the intra-office number successfully forwards an incoming call from another intra-office number to an outer-office number. In the Calling party number section, Type of number is Subscriber number.
Run the config protocol pra officeno x typeofclinumber subscriber command to change the type of the calling number. Incoming calls from outer-office numbers can be successfully forwarded to the specified outer-office number.
Conclusion and Suggestion
Before checking signaling, check whether the call is sent to the carrier side so that you can determine whether to check internal signaling on the eSpace U1960 or the signaling generated when the call is forwarded, which saves troubleshooting time.
Source: https://support.huawei.com/enterprise/en/doc/EDOC1000023012
That's all folks, hope you found my post useful, and don't forget to comment if you have further concerns or remarks.
Thank you very much!
