We are about to implement QOS on our WAN and are considering upgrading our older routers to the 1841 model. The current routers run the ipbase image but my supplier says that an 1841 with ipbase does not support some QOS functionality. What is the minimum image required to support all QOS features on an 1841?
Hi, as Arul said, you will be Ok with the 1841, even with the IP base image.
If you can wait for the distributors to receive stock, you can look at the 1861 that supports voice with analog and ISDN interfaces, plus the IP phones as well.
WRT QoS using voice, all what you want is LLQ, that is in all the images.
Hope this helps, please rate post if it does!