Please let me know where to start learning on the basis of CCNA Voice ?
Is CCNA Voice 640-461 still a good resource to start with ?
My goal is to get sufficient knowledge to assist our Technology team maintaining a fully functional Cisco Unified CM.Thanks in anticipation of your advice.
There is a community dedicated to Cisco Learning. You can ask your Cisco Learning related questions at https://learningnetwork.cisco.com.