Which of the following event log error messages on a Cisco TelePresence VCS is most likely to require that
you navigate to Registration > Allow List to correct the error?
A.
Authentication Failed
B.
Security denial
C.
Unknown domain
D.
Received from unauthenticated source
Explanation:
Of the choices provided, the event log error message Security denial on a Cisco TelePresence Video
Communication Server (VCS) is most likely to require that you navigate to Registration > Allow List to correct
the error. The error messages Security denial and AOR is not permitted by Allow/Deny list indicate that an
endpoint has been restricted by an allow list or a deny list. If the Restriction policy-setting is set to Allow List, an
endpoint will be allowed to register only if its alias matches an Allow List entry. If the Restriction policy setting is
set to Deny List, an endpoint will be allowed to register only if its alias does not match a Deny List entry.
To configure the restriction policy, navigate to Registration > Configuration. To add, modify, or remove Allow
List patterns, navigate to Registration > Allow List. To add, modify, or remove Deny List patterns, navigate to
Registration > Deny List.
The event log error message Authentication Failed or Received from unauthenticated source on a Cisco VCS is
most likely to require that you check the authentication settings on the Cisco VCS and on the endpoint. To
check the Cisco VCS local database, navigate to Authentication > Devices > Local Database. To check
authentication parameters on an endpoint, navigate to Configuration > System Configuration > H323 > Profile 1
> Authentication for H.323 or Configuration > System Configuration > SIP > Profile 1 > Authentication 1 for
Session Initiation Protocol (SIP).
The event log error message Unknown domain on a Cisco VCS is most likely to require that you check the list
of defined domains on the VCS by navigating to Protocols > SIP > Domains. If the endpoint’s domain name
does not exist on the VCS, the endpoint will not be allowed to register.Cisco: Endpoint registration problems with the Cisco VCS
Cisco: Cisco TelePresence Video Systems Getting Started Guide: Configuring H.323 and SIP (PDF)