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Product Overview and Highlights
VT-MODEM-4 Specifications
1.3 VT‐MODEM‐4 Specifications
Max. Data Range
Compatibility
Data Compression
Error Correction
Max. Fax Modem Rate
Fax Modem Compatibility
Ringer Equivalent
Line Jack
Phone Jack
Transmit Level
Receiver Sensitivity
Max. RS232 Rate
RS232 Signal Support
RS232 Connector
Command Set
CD (Carrier detect)
TR (Data Terminal Ready)
RD (Receive Data)
TD (Transmit Data)
Power
Input Power
Input Current
Certification
Operating Temperature
Storage Temperature
Humidity
Mounting
Dimensions
VT-MODEM-4 Hardware Guide
TELEPHONE LINE
33600 bps (V.34)
V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22A/B, V.23, V.21, Bell212A & 103
V.42 bis (4:1) and MNP 5 (2:1)
V.42/MNP 3-4
33.6 kbps
ITU-T "Super" Group 3; Class 1.0, 2.0, 2.1; Group 3, Class 1 and 2, T.4, T.30, V.21,
V.27ter, V.29, V.34, V.17, and TIA/EIA TR29.2
0.3
RJ11
RJ11
-11 dBm
-43 dBm under worst-case conditions
RS232 PORT
115.2 kbps (Kilobaud)
TXD, RXD, CTS, RTS, DCD, DTR, DSR, RI, GND
(Non- Flow Control Not Supported)
DB9 female, RS232
All standard AT and S register commands including Class 1 and Class 2 Fax commands
STATUS LEDS
The modem has detected a carrier on the phone line (a remote modem has been
detected).
The PC (or Sixnet Station) has established a connection to the modem and is ready.
Flashes as data is received from the phone line.
Flashes as data is sent out the phone line.
On when power is present.
GENERAL CHARACTERISTICS
10 - 30 VDC
75mA @ 24VDC (typical)
52mA @ 24VDC (Sleep Inactivity Mode)
FCC Part 15 and FCC Part 68; UL 508; CSA C22.2/142;
ACA TS 001- 1997; ACA TS 002-1997; AS/NZS3260-1993;
AS/NZS3548-1995; CTR21 (98/482/EC); EN55022; EIEC 950:1991;
Hazardous Locations: ANSI/ISA 12.12.01, CSA C22.2/213 (Class 1, Division 2 Groups
A, B, C and D)
-30° to 70° C
-40° to 85° C
5 to 95% RH (non-condensing)
DIN rail or panel mount
W x 4.75L x 1.35H inches (8.2 W x 12.1 L x 3.4H cm)
Revised 2018-12-10
Drawing No. LP1087-A
1-3
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