Which two recommendations are made to optimize Cisco UCM configuration to reduce the number of toll fraud incidents in an organization? (Choose two.)
Which two functions are provided by Cisco Expressway Series? (Choose two.)

Refer to the exhibit. Which route pattern can the Cisco UCM administrator apply to the configuration to allow calls to "1306.1316.1326,13*6.13#6” only?
What an advantage of using of the SIP OAuth mode in Cisco Jabber?