Have it call a single number. Either parse the mail box out of that number or derive it from the identity of the caller. Use the s option on voicemailmain to suppress the password check and include the password in the extension number.
Note there is nothing special about *98. If you are using software that requires you to use *98, you should ask of the people that maintain that software.
I think I understand what you mean except for the “include password in extension number”. If I suppress password check, why do I need to include it?
It’s me. I setup voicemail by the book (Asterisk, definite quide) and they used it at example. I did use same *98 in Cisco phone setup and it worked, it’s not really a problem. But I guess now I need to create special number that starts with 000 for example and be like 6 digits. So, 000 will mean it’s voicemail, other 3 chars will be parsed to be used as voicemail user.
At this point system does not need to be secured much, I want easiest use if possible.