We are ruuning IOS 12.4.6 at Router3845 which has a built-in DSP 7.4.1. We got a lot of voice quality complains from Customer. It looks like We are hitting Cisco Bug CSCsd54344. What i am trying to do is get a DSP firware 4.4.18 or 7.4.1 from another 3845 and change the DSP.
My question is:
1. Which dsp is better 4.4.18 or 7.4.1?
2. How to get the DSP firmware from another 3845 and how do I upgrade the DSP? Is it sitting on the flash?
Thanks for any input.