Acme Company has several offices around the country. The company has deployed a VoIP network with Cisco Unified CallManager in a multisite centralized configuration but the is a requirement to place a call agent at some of the remote sites. Which IOS gateway feature should be deployed at the remote site to enable local call control?()
- AGatekeeper multizone
- BCall Admission Control (CAC)
- CAutomatic Alternate Routing (AAR)
- DSurvivable Remote Site Telephony (SRST)
- ECisco Unified CallManager Express (CME)