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Technical Description
Latency
Buffer Capacity
5
MINI-LINK PT 2010 Functions – Radio Link
5.1
Hitless Adaptive Modulation
Hitless Adaptive Modulation enables automatic switching between different
modulations, depending on radio channel conditions. Hitless Adaptive
Modulation makes it possible to increase the available capacity over the same
frequency channel during periods of normal propagation conditions.
Modulation, and thereby capacity, is high during normal radio channel
conditions and lower during less favorable channel conditions, for example,
when affected by rain or snow. Modulation switches are hitless, that is, error
free. In situations where traffic interruption normally would occur, it is possible
8
Native Ethernet WAN port
properties
Description
The end to end latency for an Ethernet
over Packet Link connection will differ
based on different parameters, for
example, link speed. Typical end
to end latency contribution between
two Ethernet ports on two nodes
connected with Ethernet over packet
Link with 135 Mbps link capacity is:
• 0.15 ms for 64 byte frame size
• 0.35 ms for 2,048 byte frame size
All egress WAN ports have a buffer
space associated with the port. The
available buffer space is shared
between the traffic classes (priority
queues).
A Packet Link WAN port can buffer
up to 64 MB of traffic at max link
capacity. By default, the buffer space
is split in 4 MB for each TC queue for
TC0 to TC2, and 128 kB for each TC
queue for TC3 to TC7. The individual
buffer size per TC queue can be
adjusted in 64 kB increments.
1/221 02-CSH 109 172/1-V1 Uen E | 2012-11-07
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