MDS TransNET 900 Specifications download pdf (Page 75)

MDS 05-2708A01, Rev. E MDS TransNET Ref. Manual 65

must be capable of handling 1 Watt and have >25 dB isolation between

TX ports. In some cases, up to 35 dB of isolation is required. Isolation is

improved by adding attenuators between the TransNET radios and the

splitters.

Invisible place holder

Figure 20. Co-Located Masters Sharing an Antenna

9.13 Security

Today, the operation and management of an enterprise is becoming

increasing dependent on electronic information flow. An accompanying

concern becomes the security of the communication infrastructure and the

security of the data itself. MDS takes this matter seriously, and provides

several means for protecting the data carried over its wireless products.

The radio addresses this issue primarily through the use of the following

items:

1. A proprietary modem/data link layer—Data signals are processed

using code and hardware specifically designed by MDS.

2. A unique Network Address—This provides a unique identifier for each

radio in a network. A radio is not addressable unless this unique code is

included in the data string.

3. An optional encryption value (code)—Setting an encryption code

requires the use of the

CODE command. This command scrambles the

radio’s hop pattern and encrypts payload data content. A radio requires

the correct Network Address (

ADDR) and CODE value in order to

synchronize. When the

CODE command is used, the same value must be

programmed into all radios in the network. See “CODE [NONE,

1…255]” on Page 31 for more details.

The effective combination of

CODE and ADDR discourage the use of an

exhaustive search to gain access to a system.

Master—Network “A”

CS Master

Power

Divider

(– 3 dB)

Omnidirectional

Antenna

Master—Network “B”

CS Slave

Network “A” Network “B”

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