After getting reports that users cannot make calls out to the PSTN, a network administrator
opens the Cisco Unified Communications Manager Administration web page and begins to
review route patterns. Why would the administrator look here when troubleshooting PSTN
connectivity troubles?

A.
A route pattern contains a list of gateways that can reach the PSTN.

B.
A route pattern contains dial plan information for calling the PSTN.

C.
A route pattern contains the necessary privileges for calling the PSTN.

D.
A route pattern contains a list of SIP trunks that can reach the PSTN.