Within the voicemail, "lines" actually refer to ports, not C.O. lines. Set them all allowed to dial out. Lines within the DSUII refer to C.O. lines. To control which lines the voicemail can dial out on, create a line group in the DSUII and assign the appropriate lines. Note the line group number. Then in Keyvoice go to the General screen where there should be a 'digits to dial to get an outside line' and change it from 9 to the line group number you just created.

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