| Exam 300-075 | Question id=2855 | Describe and Implement Centralized Call Processing Redundancy |
What component acts as a user agent for both ends of a SIP call while Cisco Unified SIP SRST is providing failover during a WAN outage?
| A. |
B2BUA | |
| B. |
SIP server | |
| C. |
SIP proxy | |
| D. |
SIP SRST router | |
| E. |
SIP registrar |