We have a ISR4331 that we use as a voice gateway. Currently it is on version isr4300-universalk9.03.16.04b.S.155-3.S4b-ext.SPA.bin and it works without any problems. After the upgrade it doesn't even initialize the call I ran a kron debug and found  ...

We upgraded from a CME2821 to CUCM11.5.  A part of this upgrade was losing the ability to utilize our paging system.  Our current setup is dn *88 connects to the paging system and dn 7778 pages to our phones on the Informacast SingleWire basic system...

I've completed the installation of my CUCM 11.5 using a bootable .iso file. Now I'm trying to install CUC for the voicemail and can't get it done because there isn't a bootable .iso only a regular .iso file. I've followed the instructions at http://w...

So my faithful CME2821 has gone the way of the dodo bird.  I have to get a new system installed stat.  I found a Cisco partner and they recommended the ISR-4331.  Now I find out I would have to buy about and extra 4-5 worth of equipment and licenses ...