admin monitoring

hy !
i`m using ztdummy as timer and IAX2 and SIP as protocols with astguiclient 2.02.
I know that vicidial offer a feature for the managers to listen the live calls of the agents, and i want to use that feature but the problem is that when i press the Listen Trunk Button i receve this message: "You can only monitor zap channels".
Can I use zap channels with ztdummy ? without haveing a digium board ??
10x
i`m using ztdummy as timer and IAX2 and SIP as protocols with astguiclient 2.02.
I know that vicidial offer a feature for the managers to listen the live calls of the agents, and i want to use that feature but the problem is that when i press the Listen Trunk Button i receve this message: "You can only monitor zap channels".
Can I use zap channels with ztdummy ? without haveing a digium board ??
10x