Cisco Cisco Expressway Manual De Mantenimiento
Field
Description
Usage tips
Port on B2BUA
for Expressway
communications
for Expressway
communications
The port used on the B2BUA for communicating
with the Expressway. Default is 65070.
with the Expressway. Default is 65070.
Port on B2BUA
for Lync call
communications
for Lync call
communications
The port used on the B2BUA for call
communications with the Microsoft Lync server.
Default is 65072.
communications with the Microsoft Lync server.
Default is 65072.
RDP TCP port
range start / end
range start / end
Defines the range of TCP ports on which the
B2BUA listens for the RDP media from Lync.
Default is 6000 - 6099.
B2BUA listens for the RDP media from Lync.
Default is 6000 - 6099.
Each simultaneous RDP transcoding
session created on the B2BUA requires a
receiving port. The range is limited to 100
as this is the maximum possible number of
simultaneous transcode sessions.
session created on the B2BUA requires a
receiving port. The range is limited to 100
as this is the maximum possible number of
simultaneous transcode sessions.
RDP UDP port
range start / end
range start / end
Defines the range of UDP ports on which the
B2BUA transmits transcoded RDP media towards
the BFCP receiver. Default is 6100 - 6199.
B2BUA transmits transcoded RDP media towards
the BFCP receiver. Default is 6100 - 6199.
Each simultaneous RDP transcoding
session created on the B2BUA requires a
port to send the resulting BFCP media to
the conference. The range is limited to 100
as this is the maximum possible number of
simultaneous transcode sessions.
session created on the B2BUA requires a
port to send the resulting BFCP media to
the conference. The range is limited to 100
as this is the maximum possible number of
simultaneous transcode sessions.
Maximum RDP
transcode
sessions
transcode
sessions
Limits the number of simultaneous
RDP transcoding sessions on this Expressway.
Default is 20.
RDP transcoding sessions on this Expressway.
Default is 20.
Higher values will mean that more system
resources can be consumed by RDP
transcoding, which could impact other
services. Maximum is 100.
resources can be consumed by RDP
transcoding, which could impact other
services. Maximum is 100.
Port on B2BUA
for Lync
presence
communications
for Lync
presence
communications
The port used on the B2BUA for presence
communications with the Microsoft Lync server.
communications with the Microsoft Lync server.
Default is 10011.
Configuring the B2BUA's Trusted Hosts
The B2BUA trusted hosts page (Applications > B2BUA > Microsoft Lync > B2BUA trusted hosts) is used to specify
the devices that may send signaling messages to the Lync B2BUA.
the devices that may send signaling messages to the Lync B2BUA.
The B2BUA only accepts messages from devices whose IP address is included in the list of trusted hosts.
Note that trusted host verification only applies to calls initiated by Lync that are inbound to the Expressway video
network. It is not necessary to configure trusted hosts if calls are only ever to be initiated from the Expressway video
network.
network. It is not necessary to configure trusted hosts if calls are only ever to be initiated from the Expressway video
network.
The Expressway has a limit of 25 trusted hosts. If there are more than 25 trusted hosts, the Expressway raises an
alarm. You can work around this limit by adding another Gateway Expressway, or by pointing some of the Lync
servers to a Lync proxy and then trusting the proxy instead.
alarm. You can work around this limit by adding another Gateway Expressway, or by pointing some of the Lync
servers to a Lync proxy and then trusting the proxy instead.
The configurable options are:
Field
Description
Usage tips
Name
An optional free-form description of the trusted
host device.
host device.
The name is not used as part of the "trusted"
criteria. It is provided only to help distinguish
between multiple devices, rather than having
to rely on their IP addresses.
criteria. It is provided only to help distinguish
between multiple devices, rather than having
to rely on their IP addresses.
IP address
The IP address of the trusted host device.
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Cisco Expressway Administrator Guide