When a headquarters user uses a softphone at the remote site, the administrator notices that the PSTN calls are still going via voice gateway in the headquarters. The administrator enabled Device Mobility in the system parameters and on all phones. What are the next two components that the administrator must check, according to the flow of Device Mobility operation?

A company has a headquarters site and a remote site. Cisco Unified Communications Manager acts as a DHCP server. Both sites use their local voice gateways for PSTN calls. At the headquarters site, the PSTN prefix is 9, and the emergency number is 911. At the remote site, the PSTN prefix is 0, and the emergency number is 112. Here are the deployment policies for roaming devices:
. Softphones can roam between two sites.
. A roaming softphone uses the local gateway for all PSTN calls.
. The user keeps home dial habits on a roaming softphone, with the exception of the emergency number.
When a headquarters user uses a softphone at the remote site, the administrator notices that the PSTN calls are still going via voice gateway in the headquarters. The administrator enabled Device Mobility in the system parameters and on all phones. What are the next two components that the administrator must check, according to the flow of Device Mobility operation? (Choose two.)
A. Device Mobility Group
B. Physical Location
C. DHCP subnet
D. Device Mobility Info
E. IP address of the softphone