Cisco Cisco TelePresence Video Communication Server Expressway
Additional information
Determining how to overwrite a caller ID with a FindMe ID
Cisco VCS can only overwrite the Caller ID with a FindMe ID if:
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the call signaling passes through the Cisco VCS (or Cisco VCS cluster) that hosts the FindMe account
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the Cisco VCS can identify a FindMe as the owner of the endpoint caller ID; it can do this if the incoming
caller ID provided in the call matches one of the following:
caller ID provided in the call matches one of the following:
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a FindMe device which is only found in a single FindMe account
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a single principal FindMe device (if the same device address is associated with more than one FindMe
location).
location).
If either condition is not met, the Incoming caller ID is passed through unchanged.
FindMe in a Cisco VCS cluster
When FindMe is used with a Cisco VCS cluster, the FindMe option key must be enabled on every Cisco
VCS peer in the cluster. The FindMe database is replicated across all peers in the cluster so that FindMe
functionality can be performed on any peer that a call traverses.
VCS peer in the cluster. The FindMe database is replicated across all peers in the cluster so that FindMe
functionality can be performed on any peer that a call traverses.
See Cisco VCS Cluster Creation and Maintenance Deployment Guide for more information about Cisco VCS
clusters.
clusters.
Microsoft Lync and the Cisco VCS B2BUA
When FindMe is used with a cluster of “Lync gateway” Cisco VCSs, each peer in the cluster registers a
portion of the FindMe users to Microsoft Lync so that call loading is shared across cluster peers. (Calls from
Lync to Cisco VCS are delivered by Lync to the Cisco VCS that registered the user.)
portion of the FindMe users to Microsoft Lync so that call loading is shared across cluster peers. (Calls from
Lync to Cisco VCS are delivered by Lync to the Cisco VCS that registered the user.)
See Microsoft Lync 2010 and Cisco VCS Deployment Guide for more information.
FindMe accounts hosted on different Cisco VCSs in a network
FindMe accounts can be distributed across multiple Cisco VCSs (or Cisco VCS clusters), but each
individual account can be hosted on only one Cisco VCS (or Cisco VCS cluster).
individual account can be hosted on only one Cisco VCS (or Cisco VCS cluster).
For FindMe to overwrite a caller ID with the caller's FindMe ID, the call signaling must pass through the
Cisco VCS (or Cisco VCS cluster) that hosts the relevant account.
Cisco VCS (or Cisco VCS cluster) that hosts the relevant account.
Therefore, care must be taken in designing system topologies to ensure that caller ID can always be
overwritten.
overwritten.
For example, if two users have their accounts on a Cisco VCS Control, but both are working from home on
endpoints that are registered to a Cisco VCS Expressway (which has a traversal zone to the Cisco VCS
Control):
endpoints that are registered to a Cisco VCS Expressway (which has a traversal zone to the Cisco VCS
Control):
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If one user calls the other user's FindMe ID, their caller ID will be overwritten by their FindMe ID, as the call
signaling will go via the Cisco VCS Control (where the user account is hosted).
signaling will go via the Cisco VCS Control (where the user account is hosted).
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If one caller calls the other user's endpoint URI directly, the call signaling will go through the Cisco VCS
Expressway, but not the Cisco VCS Control. In this scenario the caller ID will not be overwritten with the
FindMe ID as the signaling would not pass through the Cisco VCS Control. (It is recommended that users
call FindMe IDs rather than individual device URIs.)
Expressway, but not the Cisco VCS Control. In this scenario the caller ID will not be overwritten with the
FindMe ID as the signaling would not pass through the Cisco VCS Control. (It is recommended that users
call FindMe IDs rather than individual device URIs.)
Cisco TMSPE Provisioning Deployment Guide
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Deploying FindMe
Additional information