Which of the following devices are not found in the endpoints layer in the Cisco Unified Communications
Architecture? (Select 2 choices.)
A.
VoIP gateways
B.
analog gateways
C.
analog phones
D.
wireless phones
E.
IP phones
F.
IM clients
Explanation:
Voice over IP (VoIP) gateways and analog phones are not found in the endpoints layer in the Cisco Unified
Communications Architecture. The Cisco Unified Communications Architecture divides the components of a
VoIP solution into the following four layers:The endpoints layer generally contains devices that an end user is most likely to recognize and use. End users
do not typically interface with VoIP gateways, which are found in the infrastructure layer. Analog phones are not
capable of directly interfacing with a VoIP network; therefore, analog phones are not part of the Cisco UnifiedCommunications Architecture.
Wireless phones, IP phones, and instant messaging (IM) clients are all found in the endpoints layer because
end users commonly interface with these devices. An analog gateway is responsible for translating voice
packets between VoIP networks and analog phones. The VoIP network does not extend beyond the analog
gateway to the analog phone? therefore, the analog gateway is also considered an endpoint in the Cisco
Unified Communications Architecture.
The applications layer of the Cisco Unified Communications Architecture contains devices and systems
responsible for enhancing a Cisco VoIP solution with additional features, such as voice mail, fax delivery, and
email integration. Systems that are found in the applications layer include Cisco Unity and Cisco Unified
Presence (CUPS). Cisco Unity is a scalable messaging server that integrates with thirdparty collaboration
servers, such as Microsoft Exchange and Novell GroupWise. CUPS is an application that can assist a user in
determining whether another user is currently on a call or available for a meeting.
The call processing layer of the Cisco Unified Communications Architecture contains devices that are
responsible for determining what functions or signals must be generated for specific actions. Systems that are
found in the call processing layer include Cisco Unified Communications Manager (UCM), Cisco Unified
Communications Manager Express (CME), and Unified Communications 500 (UC500). Each of these systems
supports a different number of end users.
The infrastructure layer is the foundation of the Cisco Unified Communications Architecture. This layer contains
devices that are responsible for routing and switching voice packets across a network. Systems that are found
in the infrastructure layer include VoIP gateways, VoIP switches, and Cisco Adaptive Security Appliance (ASA)
firewalls.
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/uc_system/UC8-6-1/system_description/
SD861.pdf#page=78
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/7x/uc7_0/endpnts.html
