Cisco TelePresence Video Communication Server Administrator's Manual page 343

Reference material
Zones Zone [1..1000] Neighbor SIP Poison Mode: <On/Off>
Determines whether SIP requests sent out to this zone will be "poisoned" such that if they are received by the
local VCS again they will be rejected.
On: SIP requests sent out via this zone that are received again by this VCS will be rejected.
Off: SIP requests sent out via this zone that are received by this VCS again will be processed as normal.
Default: Off
Example: xConfiguration Zones Zone 3 Neighbor SIP Poison Mode: Off
Zones Zone [1..1000] Neighbor SIP Port: <1024..65534>
Specifies the port on the neighbor to be used for SIP calls to and from this VCS.
Default: 5061
Example: xConfiguration Zones Zone 3 Neighbor SIP Port: 5061
Zones Zone [1..1000] Neighbor SIP ProxyRequire Strip List: <S: 0,255>
A comma separated list of option tags to search for and remove from Proxy-Require headers in SIP requests
received from this zone. By default, no option tags are specified.
Example: xConfiguration Zones Zone 3 Neighbor SIP ProxyRequire Strip List:
"com.example.something,com.example.somethingelse"
Zones Zone [1..1000] Neighbor SIP Record Route Address Type: <IP/Hostname>
Controls whether the VCS uses its IP address or host name in the record-route or path headers of outgoing SIP
requests to this zone.
Note: setting this value to Hostname also requires a valid DNS local host name to be configured on the VCS.
Default: IP
Example: xConfiguration Zones Zone [1..1000] Neighbor SIP Record Route Address
Type: IP
Zones Zone [1..1000] Neighbor SIP SDP Attribute Line Limit Length: <80..65535>
If SIP SDP attribute line limit mode is set to On, sets the maximum line length of a=fmtp SDP lines.
Default: 130
Example: xConfiguration Zones Zone 3 Neighbor SIP SDP Attribute Line Limit
Length: 130
Cisco VCS Administrator Guide (X6.1) Page 343 of 401