Polycom Vortex EF2211 User Manual

8.149. SSTEXT -- Set Text to be Displayed by Screen Saver
8.150.
SWRESET -- Perform Soft Reset of System
8.151.
SWVER -- Query Software Version
8.152.
TONEE -- Enable or Disable Entry and Exit Tones
8.153.
TONER -- Enable or Disable Ring Tones
8.154.
VTXMODI -- Enable VTX Mode on Specified Inputs
8.155.
VTXMODO -- Enable VTX Mode on Specified Inputs
1. Introduction
This document describes the command protocol that is used to communicate with the Vortex EF2211
via its RS-232 port.
2. RS-232 Hardware
The communication between the Vortex and a host controller is conducted via the RS-232 port on the
back panel of the Vortex. The Vortex's RS-232 port operates at the following settings:
● Bit Rate (bps): 9600 (default), 19200, or 38400
● Data Format: 8 data bits, no parity, 1 stop bit (8N1)
● Flow Control: none (default) or hardware (RTS, CTS)
Note that although the flow control setting is user selectable to none or hardware, hardware flow
control must be used when updating the firmware of the Vortex. This means that while a 3-wire RS-
232 cable (RX, TX, GND) is acceptable for control of the Vortex, the minimum cable for updating
firmware should contain 5 wires (RX, TX, RTS, CTS, GND).
3. Programming Tips
3.1. Initialization
During power up of the Vortex device or initialization of the host program, electrical fluctuations on
the RS-232 lines may cause the Vortex to receive spurious data. After initialization, the host program
should send a few carriage return characters (^M, ASCII 13) to the connected Vortex to flush out any
spurious characters it may have received. Failure to do this could result in the Vortex ignoring the first
command received after initialization.
As part of the host program initialization, the host will want to synchronize the status of its controls
with the current status of the Vortex devices that are being controlled. The host could initialize its
controls to default values and then send commands to the Vortexes to set them to the same state.
This approach has significant disadvantages since initializing the host program could undo settings
made by other host programs or by the front panel controls of one of the linked Vortex devices. A
better approach is to query the linked Vortex devices for their status and set the host program
controls based on the return values.

Polycom Vortex EF2211 Specifications

Power

input voltage	110-240 VAC
frequency	47-63 Hz
power consumption	25 W
phantom power	24 V

Connectors

RS-232	DB9F
EF Bus In/Out	RJ45
Telephone Line/Set	RJ11
Control/Status	DB25F
Audio	3.5mm quick connect terminal blocks

Audio Specifications

microphone input	-30 dBu to +0 dBu
line inputs	-20 dBu to +0 dBu
line outputs	-20 dBu to +0 dBu
loudspeaker output	10 W, 4-16 Ohms
input impedance	10 k Ohms
output impedance	50 Ohms
headroom	20 dB
signal to noise ratio	85 dB
frequency response	20 Hz - 22 kHz

Echo and Noise Cancellation

total cancellation	65 dB
convergence rate	40 dB/second
noise cancellation	0-15 dB
echo cancellation	40 dB, total >65 dB
convergence	30 dB/second
cancellation span	32 ms
acoustic echo cancellation span	270 ms

Operating Environment

operating temperature	0 °C - 40 °C
status outputs	5 V, 20 mA each

Weight and Dimensions

width	483 mm
length	244 mm
height	45 mm
weight	1.8 kg
shipping weight	2.5 kg