| Exam 300-080 | Question id=4251 | Troubleshooting Video Conferencing Architecture |
A user is dialing an external PSTN number with a prefix of 01 from a Cisco TelePresence SX10 Quick Set in a Cisco VCS environment. In the past, the Cisco VCS and the ISDN gateway were correctly configured with a prefix of 01, but the calls are now failing. What are three possible causes?
| A. |
The Cisco VCS Control is down. | |
| B. |
The interworking setting is turned off. | |
| C. |
The audio feature in the Cisco TelePresenceSX10 is turned off. | |
| D. |
The SIP trunk is not configured on the gateway. | |
| E. |
01 is not a valid prefix. | |
| F. |
ISDN is not enabled on the Cisco TelePresenceSX10. | |
| G. |
The Cisco TelePresenceSX10 is not registered to the Cisco VCS Control. | |
| H. |
The Cisco TelePresenceSX10 is not registered to the Cisco Express C. |