Hi all,<br><br>can you guys advise what approach normally you follow while calculating the below requirements:<br><br>1) Router size - 2801/2811/2821/3845 - any best practice<br>2) ISDN Channel calculation - Ratio of Users to ISDN channels calculation<br>
3) DSP Resource calculation<br><br>I have few sites (with size varying from 50 upto 1000 users) lined up for migration from PABX to VoIP. Was calculating the requirements, thought it would be good to have second opinion.<br>
<br>CUCM is running on 8 and all gateways will be MGCP. <br><br>If anyone can please share the best practices or their experiences.<br><br>gr<br>