Verilink PRISM 3101 (34-00212) Product Manual Manual de usuario descargar pdf (Pagina 14)

Installation 2-4

PRISM 3101/3102

linecoding of the network interface. ESF to D4 conversion

is supported.

NET

The Network interface connection contains an automatic

line build out (ALBO) allowing the unit to be located a sub-

stantial distance away from the telco network interface with

a receive signal level down to -27 dB.

The network interface LBO level should be set as instructed

in the Line Parameters section on page 3-10. Maximum

suggested cable lengths for the connection from the unit to

the network are listed in Table 2-D. Calculations are based

on a cable temperature of 70° F, 0.083 uF/mile capacitance,

a 27 dB loss, and a 100 Ω, non-loaded, twisted pair cable.

The network physical interface is a standard RJ-48C 8-pin

modular jack. Table 2-E displays the pinout assignments.

In accordance with FCC Rules, Part

68.218(b), you must notify the tele-

phone company prior to disconnecting

this product.

DBU

The Dial Back-Up (DBU) port provides an alternate path

when the T1 network interface service is disrupted or perfor-

mance quality is degraded. This port is a 10-pin RS-232 port

that can connect, through a connector adapter, to a public

switched digital network (PSDN) device such as a TxPORT

PS500. Table 2-F displays the pinout assignments. See page

3-13 for information on DBU parameters and settings.

Data Port Connections

The PRISM 3101 is equipped with either a V.35 port (on a

standard 34-pin connector) or with an EIA 530 port (on a

standard 25-pin DB-25 connector). The PRISM 3102 is avail-

able with either two V.35 ports or with two EIA 530 ports.

A standard EIA 530 to RS-449 conversion cable may be

used to adapt the DB-25 high speed port connection to 37-

pin RS-449 compatible data equipment. Pin functions for

both high speed port interfaces are listed in Table 2-G.

Default settings route all available DS0s to the T1 DTE port.

FCC rules require that interconnect-

ing cables carrying high speed data

be shielded appropriately in order to min-

imize radio frequency interference.

Table 2-C T1 DTE Pinout

Pin T1 DTE Interface

1 Data Out

2 Data Out

3,6 Not Used

4 Data In

5 Data In

7,8 Chassis Ground

Table 2-D Maximum Cable Lengths

Cable Type Loss per 1000' Max Cable Length

26-gauge PIC 6.8 dB 4,400 ft

24-gauge PIC 5.4 dB 5,500 ft

22-gauge PIC 4.2 dB 7,100 ft

19-gauge PIC 3.0 dB 10,000 ft

PIC - Plastic Insulated Cable

Table 2-E Network Interface Pinout

Pin T1 NET Interface

1 Data In

2 Data In

3, 6 Not used

4 Data Out

5 Data Out

7, 8 Chassis Ground

Table 2-F DBU Port Pinout

Pin Connection

1 Rx Clock In

2DTR Out

3RTS Out

4 Frame Ground

5 Data Out

6 Data In

7 Signal Ground

8CTS In

9 DCD In

10 Tx Clock In

Table 2-G High Speed DTE Interface

Common Name

EIA 530

DB-25

V.3 5

34-pin

Frame Ground 1 A

Transmit Data 2, 14 P, S

Receive Data 3, 16 R, T

Request to Send 4, 19 C

Clear to Send 5, 13 D

Data Set Ready 6, 22 E

Signal Ground 7 B

Data Carrier Detect 8, 10 F

Transmit Clock 15, 12 Y, AA

Receive Clock 17, 9 V, X

Local Loopback 18 J

Data Term Ready 20, 23 H

Remote Loopback 21 BB

Terminal Timing 24, 11 U, W

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 46 47

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