Asterisk with Cisco Border Element

Good Day Everyone,
Does anyone have any specific information regarding configuration with a Cisco Unified Border Element (CUBE)?

We are attempting to register a softphone through the Border Element to the Asterisk and keep getting 401 Unauthorized.

Any information would be much appreciated.

We are using Asterisk 1.6.2 with a Cisco Border Element IOS Version 15 / CME 8.0.

You need to open ports 5060 and RTP, When we have the 401 error its because the router dont permit the traffic s DMZ solve the problem