Hi,

 > root(a)g2:~# /usr/lib/ofono/test/dial-number XXXXXXXXXX
> Using modem /hso_0
> /hso_0/voicecall01
>
> the test case shows it had been created in voicecall01, but when I list
> the phone call
> root(a)g2:~# /usr/lib/ofono/test/list-calls
> [ /hso_0 ]
>      [ /hso_0/voicecall02 ]
>          Name =
>          LineIdentification = 9496796229
>          Multiparty = 0
>          Emergency = 0
>          RemoteHeld = 0
>          State = alerting
>          RemoteMultiparty = 0
>
> the voicecall which supposed to be at the first
> interface(/hso_0/voicecall01) will be created at second
> interface(/hso_0/voicecall02).
>
> Does anyone have any clue for this problem?

Hard to tell without AT command logs, but likely the voicecall atom 
driver you're using is not handling your modem correctly or your modem 
firmware is not following standards.

Regards,
-Denis