LifeSize Gateway-PRI, Руководство пользователя

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Configuring the LifeSize Gateway 77
Configuring Gateway Settings
that you want to allow for a single bonded call. The default
setting for Gateway-PRIs is 30.
When the number of B channels required to process a bonded
call exceeds the number specified in this field, the LifeSize
Gateway performs downspeeding as shown in
Table 3-7 .
6
In the For bonded calls, allow downspeeding down to n B
channels field , choose the minimum number of B channels
that must be available before the LifeSize Gateway attempts to
reconnect a video call.
C
ONFIGURING
Q
UALITY
OF
S
ERVICE
S
ETTINGS
You can configure the LifeSize Gateway to add a Quality of Service (QoS) IP
precedence code in the IP header of outbound packets on the IP network.
Routers on the network that support this method can give precedence to such
coded packets and facilitate the transmission of the packets more efficiently.
You can set priority levels on the LifeSize Gateway for voice calls, video calls,
or both.
The Type of Service (TOS) field in the IP header contains eight bits and
indicates the three abstract quality of service parameters:
Delay (D)
Throughput (T)
Reliability (R)
Table 3-7 Downspeeding Policy Operation
Call Direction Downspeed
Advanced
Command
Parameter If Call B Channels Exceed the
Maximum:
IP (LAN) to WAN (ISDN) enable
(default) Gateway tries to call at the maximum
number of B channels
IP (LAN) to WAN (ISDN) disable Call disconnects
WAN (ISDN) to LAN (IP) enable
(default) Call disconnects
WAN (ISDN) to LAN (IP) disabled Call disconnects.