3 Product Features
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3.4 Channel Bandwidth and Link Symmetry Control
The PTP 500 series provides configurable channel bandwidth in the radio link (5 MHz, 10
MHz and 15 MHz depending on the frequency band for the bandwidth choice), and
configurable fixed and adaptive link symmetry. Fixed link symmetry supports:
• 3:1
• 1:1
• 1:3
Channel bandwidth 5 MHz supports link symmetry 1:1 only.
3.5 Non Line Of Sight (NLOS) and Line Of Sight (LOS)
The PTP 500 Series Bridge is designed to operate in both Non Line Of Sight (NLOS) and
Line Of Sight (LOS) environments.
3.6 Upgradeable Software
The PTP 500 Series Bridge is fully software upgradeable. New software images are first
downloaded from the Motorola website http://www.motorola.com/ptp
to a convenient
computer. The image is then uploaded to the ODU via the web management page described
in Section 7.8 “Software Upgrade”. The compressed image is first loaded into RAM and
che
ck-summed. If the compressed image transfer has completed successfully the image is
decompressed and written to flash memory. On completion of this process the unit can be
rebooted to use the newly uploaded image. Should this process fail, the unit will revert to a
protected compressed image installed during manufacturing to allow the unit to be recovered.
3.7 Networking Information
The PTP 500 Series Bridge operates as a transparent Ethernet bridge. Although each unit
requires an IP address, this IP address is for management purposes only, and it plays no part
in the forwarding of bridged Ethernet frames. IP addresses are assigned during initial
configuration as described in Section 6 “Installation”.
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