Cisco TelePresence Video Communication Server Administrator's Manual page 341

Reference material
Zones Zone [1..1000] Neighbor Interworking SIP Video DefaultCodec:
<None/H261/H263/H263p/H263pp/H264>
Specifies which video codec to use when empty INVITEs are not allowed.
Default: H263
Example: xConfiguration Zones Zone 3 Neighbor Interworking SIP Video
DefaultCodec: H263
Zones Zone [1..1000] Neighbor Interworking SIP Video DefaultResolution:
<None/QCIF/CIF/4CIF/SIF/4SIF/VGA/SVGA/XGA>
Specifies which video resolution to use when empty INVITEs are not allowed.
Default: CIF
Example: xConfiguration Zones Zone 3 Neighbor Interworking SIP Video
DefaultResolution: CIF
Zones Zone [1..1000] Neighbor Monitor: <Yes/No>
Specifies whether the zone monitors the aliveness of its neighbor peers. H323 LRQs and/or SIP OPTIONS will
be periodically sent to the peers. If any peer fails to respond, that peer will be marked as inactive. If no peer
manages to respond the zone will be marked as inactive.
Default: Yes
Example: xConfiguration Zones Zone 1 Neighbor Monitor: Yes
Zones Zone [1..1000] Neighbor Peer [1..6] Address: <S:0,128>
Specifies the IP address or Fully Qualified Domain Name (FQDN) of the neighbor. If the neighbor zone is a VCS
cluster, this will be one of the peers in that cluster.
Example: xConfiguration Zones Zone 3 Neighbor Peer 1 Address: "192.44.0.18"
Zones Zone [1..1000] Neighbor Registrations: <Allow/Deny>
Controls whether proxied SIP registrations routed through this zone are accepted.
Default: Allow
Example: xConfiguration Zones Zone 3 Neighbor Registrations: Allow
Zones Zone [1..1000] Neighbor SIP Authentication Trust Mode: <On/Off>
Controls whether authenticated SIP messages (ones containing a P-Asserted-Identity header) from this zone
are trusted.
On: messages are trusted without further challenge.
Off: messages are challenged for authentication.
Default: Off
Example: xConfiguration Zones Zone 3 Neighbor SIP Authentication Trust Mode: On
Cisco VCS Administrator Guide (X6.1) Page 341 of 401