Chapter 2 - Technical Information

Table 2-23. Inbound Call State Machine (Continued)

 

 

 

 

ViewStation FX or

 

State

VS4000 Signals

Network Signals

 

 

 

5

DTR = 1

 

 

 

 

6

RTS = 1b

 

7

Wait for DSR high

 

 

 

 

8

 

DSR = 1 AND/OR

 

 

DCD = 1 (AND/OR

 

 

DSR = 1c)

9

Go to connected state

 

 

 

 

10

DATA FLOW STARTS

DATA FLOW STARTS

 

 

 

11

User Hang-up

Far End Hang-up

 

 

 

12

RTS = 0b

DSR= 1 to 0, OR

 

DTR = 0a

DCD= 1 to 0 OR CTS=

 

CRQ = 0

1 to 0

 

All signals go low if Far

A falling edge on DSR

 

End or User hang up

or DCD or CTS is

 

is detected

interpreted by the

 

 

FX/VS4000 as a

 

 

hang-upe

13

IDLE

IDLE

 

DTR = 0a

RI = 0

 

RTS = 0b

DLO = 0

 

CRQ = 0

ACR = 0

 

 

DSR = 0

 

 

 

a. DTR does not act as shown but remains high if DTR is set to ON in the V.35 Advanced Setup screen.

b. RTS does not act as shown but acts as a resync pulse if Security/Crypto Resync is set to ON.

c. DSR is used as a ring-in indicate if DSR is set to ANSWER in the V.35 Advanced Setup screen.

d. If RS-366 Dialing is not enabled, auto answer must be enabled. If auto answer is not enabled, ring-in will be ignored when in non-dialed mode.

e. If DCD filter is set to ON in the V.35 Advanced Setup screen, the system will not react to a low DCD until DCD has been low for 60 seconds.

© Polycom, Inc.

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Polycom EX, FX, VS4000, EX4000, FX4000, VS4000 manual DCD = 1 AND/OR

EX, FX, VS4000, EX4000, FX4000, VS4000 specifications

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