An account manager is meeting with a customer who is running Cisco 2821 Integrated Services Routers at various branches with Cisco Unity Express Network Module cards in each router. The customer has decided to upgrade to Cisco 2851 Integrated Services Routers for various reasons. The customer wants to maintain the same level of voice mail and auto attendant as before and is concerned whether new equipment will need to be purchased.

What should be your response to the customer?

A.
Upgrade to the new routers and purchase a Cisco Unity Express Network Module Enhanced Capacity.

B.
Keep the same routers and purchase a Cisco Unity Express Network Module Enhanced Capacity.

C.
Upgrade to the new routers and keep the same Cisco Unity Express Network Module.

D.
Upgrade to Cisco 3800 Series Integrated Services Routers and keep the same Cisco Unity Express Network Module.