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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
3.4.3
VR-2444T Telephony Interface Specifications
1.
Operation Mode
2.
Signaling
3.
Levels
4.
Compatibility
5.
Ring Generator
3.4.4
VR-2425 GPRS Modem Specifications
1.
Standard
2.
Band Options
3.
GPRS Multi-slot class
4.
GPRS Data rates
5.
Transmit Power
6.
Receiver Quality
7.
SIM Interface
8.
SIM Control Voltage
9.
Number of Ports
10.
Serial Parameters
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:
Converter of 4-Wire voice path with signaling to 2-wire
subscriber or exchange side (FXS or FXO)
:
Input:
E&M
Output: FXS, subscriber option
FXO, CO line connection option
:
Rail to Rail level, no level changes from input to output
conversion.
:
Compatible with most of old modem, like Hitachi voice and
data modem
:
20Hz standard Ring Generator with each module
:
GSM / GPRS
:
Quad-band 850/900/1800/1900 MHz
:
Class 10
:
Maximum 85.6Kbps (In-band/Download)
Maximum 42.8Kbps (Out-band/Upload)
:
2 Watt GSM 850/900
1 Watt GSM DCS 1800/1900
:
Operate in -51dBm to -110dBm
:
Provided 1 SIM Card holder
:
3 V
:
One 10/100 Base-T Ethernet port
One RS-232 (Isolation) port TXD/RXD/SG signals
:
Configurable Asynchronous Serial Data:
Baud rate: 4800/ 9600/ 19200/ 38400/ 57600/ 115200
Data Bits: 8 / 7 bits
Stop Bit: 1 / 2 bits
Parity Bit: None / Even / Odd / Mark / Space
Chapter 3 - Main Unit
Page 36 of 90
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