In this chapter, you learned how to connect your Cisco CME system to the PSTN. You reviewed the different signaling mechanisms and the features each provides to your business. You also learned about the Cisco IOS voice-enabled router hardware you can choose from to connect to the PSTN.
The latter part of this chapter focused on PSTN call switching and routing considerations to help you set up and optimize your office to handle PSTN calls in the manner that best fits your business model.
Connecting Multiple Cisco CMEs with VoIP