Part No. TEL–09949, Rev A

Pre-Installation Information and Activities

June 2001

Page 23 of 34

 

A8

 

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DIAL LINE A

 

 

 

 

 

 

 

 

 

 

 

2W LEASE

 

 

 

 

 

 

 

 

 

 

 

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DIAL LINE B

 

 

 

 

 

 

 

 

 

 

 

2W/4W LEASE

 

 

 

 

 

 

 

 

 

 

 

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SLOT9

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Bus Master

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Switch

 

 

 

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NMS BUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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NC

 

 

 

NC BUS

 

 

NC

 

 

 

MSTR

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MSTR

 

 

 

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COMM

+5V +12V -12V

 

 

 

 

 

NC Port and

 

 

 

 

 

AC POWER

 

 

Bus Master Locations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are within Shaded Areas

Figure 11. Combining NC Ports With Backplane NMS Bus DIP Switches

Cautions and Limitations for Network Management Cabling

The enclosure daisy-chain (leased line) interface and the multi-drop (dial line) bus features do not support certain NC cabling applications.You can connect multiple NC Master modems to operate in a daisy-chain or operate in a multi-drop bus configuration. However, there can be only one NC slave configured in an enclosure multi-drop bus group or daisy-chain.

Check your NMS documentation for the maximum number of modems per channel. Do not bus more modem NC signals to a single NC port than the network manager can handle on a single channel.

Some applications require multiple NC slaves in an enclosure using the multi-drop NC bus. In this case, use the larger backplanes to accommodate multiple groups. For example, one NC slave is allowed for each group. For the number of groups that each backplane can accommodate and the number of modem cards in those slots, refer to Table 4.

Page 23
Image 23
Telenetics Modular Nest manual Combining NC Ports With Backplane NMS Bus DIP Switches