Cisco Cisco TelePresence Video Communication Server Expressway Maintenance Manual
Setting
Description
Default
Zone types
SIP parameter
preservation
preservation
Determines whether the VCS's B2BUA preserves or rewrites the
parameters in SIP requests routed via this zone.
parameters in SIP requests routed via this zone.
On preserves the SIP Request URI and Contact parameters of requests
routing between this zone and the B2BUA.
routing between this zone and the B2BUA.
Off allows the B2BUA to rewrite the SIP Request URI and Contact
parameters of requests routing between this zone and the B2BUA, if
necessary.
parameters of requests routing between this zone and the B2BUA, if
necessary.
Default: Off
Off
Neighbor
DNS
UC Traversal
Traversal
Server
Server
Traversal
Client
Client
SIP poison
mode
mode
On: SIP requests sent to systems located via this zone are "poisoned"
such that if they are received by this VCS again they will be rejected.
such that if they are received by this VCS again they will be rejected.
Off: SIP requests sent out via this zone that are received by this VCS
again will not be rejected; they will be processed as normal.
again will not be rejected; they will be processed as normal.
Off
Neighbor
Traversal
client
Traversal
server
DNS
Traversal
client
Traversal
server
DNS
SIP
encryption
mode
encryption
mode
Determines whether or not the VCS allows encrypted SIP calls on this
zone.
zone.
Auto: SIP calls are encrypted if a secure SIP transport (TLS) is used.
Microsoft: SIP calls are encrypted using MS-SRTP.
Off: SIP calls are never encrypted.
This option should normally be left as the default Auto.
Auto
Neighbor
SIP REFER
mode
mode
Determines how SIP REFER requests are handled.
Forward: SIP REFER requests are forwarded to the target.
Terminate: SIP REFER requests are terminated by the VCS.
Forward Neighbor
SIP multipart
MIME strip
mode
MIME strip
mode
Controls whether or not multipart MIME stripping is performed on
requests from this zone.
requests from this zone.
This option should normally be left as the default Off.
Off
Neighbor
SIP UPDATE
strip mode
strip mode
Controls whether or not the VCS strips the UPDATE method from the
Allow header of all requests and responses received from, and sent to,
this zone.
Allow header of all requests and responses received from, and sent to,
this zone.
This option should normally be left as the default Off. However, some
systems do not support the UPDATE method in the Allow header, so for
these zones this should be set to On.
systems do not support the UPDATE method in the Allow header, so for
these zones this should be set to On.
Off
Neighbor
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Cisco TelePresence Video Communication Server Administrator Guide
Zones and Neighbors