Cisco TelePresence Administrator's Manual page 438

Reference material
Zones LocalZone SubZones SubZone [1..1000] SIP Media Encryption Mode: <Off/On/BestEffort/Auto>
On: All media must be encrypted.
Off: All media must be unencrypted.
BestEffort: Use encryption if available otherwise fallback to unencrypted media.
Auto: No media encryption policy is applied.
Default: Auto
Example: xConfiguration Zones LocalZone SubZones SubZone 1 SIP Media Encryption Mode:
Auto
Zones LocalZone Traversal H323 Assent Mode: <On/Off>
Determines whether or not H.323 calls using Assent mode for firewall traversal will be allowed. Applies to
traversal-enabled endpoints registered directly with the VCS.
Default: On
Example: xConfiguration Zones LocalZone Traversal H323 Assent Mode: On
Zones LocalZone Traversal H323 H46018 Mode: <On/Off>
Determines whether or not H.323 calls using H460.18 mode for firewall traversal will be allowed. Applies to
traversal-enabled endpoints registered directly with the VCS.
Default: On
Example: xConfiguration Zones LocalZone Traversal H323 H46018 Mode: On
Zones LocalZone Traversal H323 H46019 Demultiplexing Mode: <On/Off>
Determines whether the VCS will operate in Demultiplexing mode for calls from traversal-enabled endpoints
registered directly with it.
On: allows use of the same two ports for all calls.
Off: each call will use a separate pair of ports for media.
Default: Off
Example: xConfiguration Zones LocalZone Traversal H323 H46019 Demultiplexing Mode: Off
Zones LocalZone Traversal H323 Preference: <Assent/H46018>
If an endpoint that is registered directly with the VCS supports both Assent and H460.18 protocols, this setting
determines which the VCS uses.
Default: Assent
Example: xConfiguration Zones LocalZone Traversal H323 Preference: Assent
Zones LocalZone Traversal H323 TCPProbe KeepAliveInterval: <1..65534>
Sets the interval (in seconds) with which a traversal-enabled endpoint registered directly with the VCS will send
a TCP probe to the VCS once a call is established, in order to keep the firewall's NAT bindings open.
Default: 20
Example: xConfiguration Zones LocalZone Traversal H323 TCPProbe KeepAliveInterval: 20
Zones LocalZone Traversal H323 TCPProbe RetryCount: <1..65534>
Sets the number of times traversal-enabled endpoints registered directly with the VCS will attempt to send a TCP
probe to the VCS.
Default: 5
Example: xConfiguration Zones LocalZone Traversal H323 TCPProbe RetryCount: 5
Cisco VCS Administrator Guide (X7.2) Page 438 of 498