i have a 2811 cisco router and it has call manager on it and i have narrowed the problem down to not having a I-S-E and everywhere i look up online only tells me how to configure it. i need to know if that is a card i need to buy or if it is already on my RTR and i just need to figure out how to activate it. my ccm will not enable and none of my phones will register. any help is appreciated.
Sgt. Thomas, Bruce A.
United States Marine Corps