voicemail doesn't seem to exist in kaz. or if it does, it's much rarer than it is in the u.s. mobile phones don't generally come with voicemail accounts and if anyone around here has a voice mailbox on their phone no one seems to use it.
caller ID and the missed call alert act as a substitute for voicemail. you get a missed call, you call them back when you next have the chance. if they have a more complicated message for you, they can tell you when you call back. kaz is essentially mithras heaven (at least in terms of voicemail).