Q: Do you require any specific configuration to ensure the Voice functions should the Frame Relay fail?
A: If you have configured your session target IP addresses effectively and have your ISDN back up working, you will not need any specific configuration.
Q: I have found that I can configure POTS dial peers with the same number on R4; is this sufficient?
A: You must ensure that a specific port will always answer the call first.
Q: Can I set up two VoIP dial peers with different codecs so if the first fails, the second should work?
A: No, a more efficient method is available to you.