Polycom SoundStation2 EX, FX, VS4000 User Manual

Integrators’ Reference Manual for ViewStation EX, ViewStation FX, and VS4000
38 www.polycom.com
Serial Interface Control Signals
If you need to customize your V.35/RS-449/RS-530 interface, use
the signal information in Table 2-21 below in addition to the
information provided by your network equipment vendor.
Table 2-21. Serial Interface Control Signals
Signal
(Pin) In/Out Description Configuration Option
ST
(TC/TT)
OUT Send Timing
(clock)
Normal: falling edge sends data
Inverted: rising edge sends data
RT (RC) IN Receive
Timing (clock)
Normal: rising edge receives
data
Inverted: falling edge receives
data
RTS
(RTS)
OUT Request To
Send
Normal: high is logic 1
Inverted: low is logic 1
DCD
(DCD)
IN Data Carrier
Detect
Normal: high is logic 1
Inverted: low is logic 1
Filter: allow DCD to drop for 60
seconds before changing call
state
CTS
(CTS)
IN Clear To Send Normal: high is logic 1
Inverted: low is logic 1
DTR
(DTR)
OUT Data Terminal
Ready
Normal: high is logic 1
Inverted: low is logic 1
On: signal remains high
a
a. If set to ON, inverted is not an option.
DSR
(DSR)
IN Data Set
Ready
Normal: high is logic 1
Inverted: low is logic 1
Answer: Use DSR as a Ring-In
indication
b
b. DSR is not used as a ring-in indication if it is set to ANSWER in
the V.35 Advanced Setup screen.

Polycom SoundStation2 EX, FX, VS4000 Specifications

General

Device Type	Conference phone
Microphone Pickup Range	360 degrees
Display	Backlit LCD
Echo Cancellation	Yes
Power Source	AC power adapter
Connectivity	Analog phone line