Introduction to the ISDN Interface

Pre-Installation Requirements

CSU Equipment

The installer must provide a Channel Service Unit (CSU) plus CSU cabling.

The CSU equipment must meet the specifications contained in Table 1-3.See page 2-12for instructions on installing the CSU.

Table 1-3. CSU equipment required for ISDN

Item

Specifications

Vendors

 

 

 

CSU

The Channel Service Unit (CSU) must

The following CSUs have been used suc-

 

comply with FCC Part 15 and Part 68. The

cessfully with the DBS ISDN.

 

CSU is installed between the DBS and the

Kentrox

 

public network. The CSU provides alarm,

 

Kentrox T-SERV II 

 

diagnostic, and monitoring functions, as

 

or

 

well as network protection.

 

 

Kentrox T-SMART

 

 

(Kentrox can be contacted at 1-800-733-

 

 

5511.)

 

 

 

CSU

Each CSU requires a network cable and an equip-

For Kentrox CSUs

Cabling

ment cable. The network cable connects from the

Kentrox offers prefabricated cables for their CSUs.

CSU to the network interface. The equipment cable

 

For the network cable, order part number 01-

 

connects from the CSU to the DBS ISDN MDF

 

93010151. For the equipment cable, order part

 

card.

 

number 01-93010121.

 

For Kentrox CSUs

 

If you fabricate your own cables, use 24 AWG

 

The network cable requires a female DB-15 con-

stranded cable that includes shielding for each pair.

 

Belden (Richmond, IN) offers stranded cable that

 

nector and an RJ48C connector. The equipment

 

cable requires a male DB-15 connector and an

complies with these specifications. Order part

 

RJ48C connector.

number 8723.

 

To simplify installation, you can order the prefabri-

 

 

cated cables shown in the “Vendors” column.

 

 

If you fabricate your own ISDN cables, you should

 

 

use 24 AWG stranded cable that includes shielding

 

 

for each pair. For best results, use the cable listed

 

 

under “Vendors.”

 

 

For Premier CSUs

 

 

You must fabricate your own cables for the Premier

 

 

CSU. The network cable requires two RJ48C con-

 

 

nectors. The equipment cable connects to an RJ48C

 

 

connector on the ISDN MDF card and to four

 

 

screw-down terminals on the CSU.

 

 

For both cables, use 24 AWG stranded cable that

 

 

includes shielding for each pair. For best results,

 

 

use the cable listed under “Vendors.”

 

 

 

 

Revised April 2000

DBS-EX23-530

1-9

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Philips DBS-EX23-530 manual CSU Equipment