Cisco Cisco Expressway Manual De Mantenimiento
Field
Description
Usage tips
Port on B2BUA
for transcoder
communications
for transcoder
communications
The IP port used on the B2BUA for
communicating with the transcoders. Default is
65080.
communicating with the transcoders. Default is
65080.
All transcoder communications are carried
out over TLS.
out over TLS.
Use transcoder
policy rules
policy rules
Specifies whether the transcoder policy rules are
used to control access to the transcoders.
Default is No.
used to control access to the transcoders.
Default is No.
If Enable transcoders for this B2BUA is
Yes, then all calls are routed via the
transcoders by default.
Yes, then all calls are routed via the
transcoders by default.
If transcoder resources need to be reserved
for specific types of calls, you can use this
option to limit the types of calls that are
routed via the transcoders. Set this option
to Yes and then define the required
for specific types of calls, you can use this
option to limit the types of calls that are
routed via the transcoders. Set this option
to Yes and then define the required
.
TURN section:
Offer TURN
services
services
Controls whether the B2BUA offers TURN
services. Default is No.
services. Default is No.
This is recommended for calls traversing a
Microsoft Lync Edge server.
Microsoft Lync Edge server.
Advanced settings: you should only modify the advanced settings on the advice of Cisco customer support.
Encryption
Controls how the B2BUA handles encrypted and
unencrypted call legs.
unencrypted call legs.
Required: both legs of the call must be encrypted.
Auto: encrypted and unencrypted combinations
are supported.
are supported.
The default is Auto.
A call via the B2BUA comprises two legs:
one leg from the B2BUA to a standard video
endpoint, and one leg from the B2BUA to
the Lync client. Either leg of the call could
be encrypted or unencrypted.
one leg from the B2BUA to a standard video
endpoint, and one leg from the B2BUA to
the Lync client. Either leg of the call could
be encrypted or unencrypted.
A setting of Auto means that the call can be
established for any of the encrypted and
unencrypted call leg combinations. Thus,
one leg of the call could be encrypted while
the other leg could be unencrypted.
established for any of the encrypted and
unencrypted call leg combinations. Thus,
one leg of the call could be encrypted while
the other leg could be unencrypted.
B2BUA media
port range
start/end
port range
start/end
The port range used by the B2BUA for handling
media. Default range is 56000–57000.
media. Default range is 56000–57000.
Ensure that the port range does not overlap
with other port ranges used by this
Expressway or this Expressway's TURN
server.
with other port ranges used by this
Expressway or this Expressway's TURN
server.
You may need to increase this range if you
Enable RDP Transcoding for this B2BUA,
because desktop sharing increases the
number of media ports required per call.
Enable RDP Transcoding for this B2BUA,
because desktop sharing increases the
number of media ports required per call.
Hop count
Specifies the Max-Forwards value to use in SIP
messages. Default is 70.
messages. Default is 70.
Session refresh
interval
interval
The maximum time allowed between session
refresh requests for SIP calls. Default is 1800
seconds.
refresh requests for SIP calls. Default is 1800
seconds.
Minimum
session refresh
interval
session refresh
interval
The minimum value the B2BUA will negotiate for
the session refresh interval for SIP calls. Default
is 500 seconds.
the session refresh interval for SIP calls. Default
is 500 seconds.
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Cisco Expressway Administrator Guide