A.4.4 SRU port Specifications

SRU Ports

 

Number of Ports

5

 

 

 

Physical Interface

female 8-pin RJ-48

 

 

 

Electrical Interface

RS232C, ITU-T V.28

 

 

 

Operational Interface

DCE - Full Duplex

 

 

 

Interface Settings

Asynchronous, Synchronous

 

 

Sub-rate Framing Format

DS0-A, DS0-B with 5 divisions per DS0

 

 

Sub-rate Time slot Number

1 through 5 depending on Sub-rate Framing Format

 

 

Synchronous Data

 

 

 

 

Format

Transparent

 

 

 

Transmit Clocking

Software selectable per port; internal or external

 

 

Speeds

2.4, 4.8, 9.6, 19.2, 28.8 and 38.4 kbps

 

 

Asynchronous Data

 

 

 

 

Format

Proprietary

 

 

 

Stop Bits

Software selectable per port; 1 or 2

 

 

Data Bits

Software selectable per port; 5, 6, 7 or 8

 

 

Parity

Software selectable per port; none, odd, even, space or mark

 

 

Speeds

.3, 1.2, 2.4, 4.8, 9.6, 14.4, 19.2, 28.8 and 38.4 kbps

 

 

Signaling

 

 

 

 

DSR

Tied to DTR

 

 

 

CTS

Software selectable per port; on, off (tied to RTS)

 

 

CTS delay

Software selectable per port; immediate, 30, 60 or 100 ms

 

 

RLSD

Software selectable per port; permanently on, follows remote RTS (drop on receipt

 

 

 

of IDLE or CGA RED)

 

 

 

 

 

 

 

 

Diagnostics & Alarms

 

 

 

 

BERT

Integral

 

 

 

Direction

Toward DTE or toward Network

 

 

Data Patterns

Off, mark, space, 1:1, 1:7, 511, 2047 zeros

 

 

Loopbacks

 

 

 

 

Local

Toward DTE or toward Network

 

 

 

 

 

Standards Compatibility

 

 

 

AT&T

TR 54075

Subrate Data Multiplexing - A Service of DATAPHONE

 

 

 

 

Digital Service

 

ITU-T

V.28

Electrical characteristics for unbalanced double-current

 

 

 

 

interchange circuits

 

 

 

X.50 Division 3

Fundamental Parameters of a Multiplexing Scheme for the

 

 

 

 

International Interface Between Synchronous Data Networks

 

 

 

 

(note: does not support 600 bps data)

 

 

 

V.14

Transmission of Start-Stop Characters over Synchronous

 

 

 

 

Bearer Channels (using async to sync converters)

 

EIA

RS 232

Interface Between DTE and DCE Employing Serial Binary

 

 

 

 

Data Interchange

 

A-8

System Standards and Specifications

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Zhone Technologies IMACS-200 manual SRU port Specifications, SRU Ports