Cisco TelePresence Administrator's Manual page 414

Reference material
Interworking Require Invite Header Mode: <On/Off>
Controls whether the SIP to H.323 interworking function sends dialog forming INVITEs requiring the
com.tandberg.sdp.v1 package.
Default: On
Example: xConfiguration Interworking Require Invite Header Mode: On"
IP DNS Domain Name: <S: 0, 128>
The name to be appended to an unqualified host name before querying the DNS server. Used when attempting
to resolve unqualified domain names for NTP, LDAP, external manager and remote syslog servers. May also be
used along with the Local host name to identify references to this VCS in SIP messaging.
Example: xConfiguration IP DNS Domain Name: "example.com"
IP DNS Hostname : <S: 0, 63>
Defines the DNS host name that this system is known by. Note that this is not the fully-qualified domain name,
just the host label portion.
The name can only contain letters, digits, hyphens and underscores. The first character must be a letter and the
last character must be a letter or a digit.
Example: xConfiguration IP DNS Hostname: "localvcs"
IP Ephemeral PortRange End: <1024..65534>
Specifies the highest port in the range to be used for ephemeral outbound connections not otherwise
constrained by VCS call processing.
Default: 49999
Example: xConfiguration IP Ephemeral PortRange End: 49999
IP Ephemeral PortRange Start: <1024..65534>
Specifies the lowest port in the range to be used for ephemeral outbound connections not otherwise constrained
by VCS call processing.
Default: 40000
Example: xConfiguration IP Ephemeral PortRange Start: 40000
IP External Interface: <LAN1/LAN2>
Defines which LAN interface is externally facing.
Default: LAN1
Example: xConfiguration IP External Interface: LAN1
IP Gateway: <S: 7,15>
Specifies the IPv4 gateway of the VCS. Note: you must restart the system for any changes to take effect.
Default: 127.0.0.1
Example: xConfiguration IP Gateway: "192.168.127.0"
Cisco VCS Administrator Guide (X7.2) Page 414 of 498