External and Rackmount Bell 202 Modems
- External 1250-PX—Bell 202S, 202C and 202E compatible,
asynchronous, half duplex, 1200 bps operation
- Connects to 2-wire dial-up line
- Voice/Data and Force Answer switches
- External 1251-KX—Bell 202T, 202D, and 202R compatible,
asynchronous, full or half duplex, 1200 bps operation
- Connects to 2-/4-wire leased lines, point-to-point or multi-point
- Rackmount 1244-PX—Bell 202S, 202T, 202D and 202C
compatible, asynchronous, full or half duplex, 1200 bps operation
- Connects to 2-wire dial-up line or 2-/4-wire leased lines,
point-to-point or multi-point
- Accessories cards include: Bell 801ACU card and 831 asynchronous serial adapter card
A Variety to Choose From
Zypcom has three different Bell 202 compatible models from which to choose: the standalone 1250-PX modem is for dial-up applications like point-of-sale and inventory control; the standalone 1251-KX is for 2-wire leased line and 4-wire leased line applications like process control and security systems; the rackmount 1244-PX is for dial-up, 2-wire leased line and 4-wire leased line, high-density rackmount application.
Bell 202S, 202T or 202S/T
The 1250-PX, 1251-KX and 1244-PX modems are low-cost, highly-reliable replacements for any Bell 202S or 202C, Bell 202T, 202D or 202R or Bell 202S/T modem.
Dial-up and Leased Lines
Each Bell 202 modem in this family will connect to telco lines via RJ11C modular connector except the 1251-KX which connects via spade lugs. The dial-up, 2-wire or 4-wire modem 1244-PX also connects via RJ11C and operate in a point-to-point or multi-point application.
High Reliability and Longevity
The 1250-PX, 1251-KX and 1244-PX modems incorporate digital technology to achieve the highest performance and reliability. Low power CMOS components assure a quality modem with long-term stability.
Voice/Data Switch
The 1250-PX modem has voice/data and manual answer switches on its front panel so the modem can be operated in conjunction with a standard telephone handset. This feature eliminates the need for special telephones.
Versatile Options
Users can quickly change the functional operation of the 1250-PX, 1251-KX and 1244-PX with a flip of a switch. Careful selection of the options allows users to fine-tune a system for maximum throughput and compatibility.
Specifications
1250-PX, 1251-KX and 1244-PX Modems
Compatibility
1250-PX: Bell 202S, 202C, 202E
1251-KX: Bell 202T, 202D, 202R
1244-PX: Bell 201S, 202T, 202C, 202D
Operating Speeds 0 to 1200 bps
Operation
1250-PX: 2-wire dial-up, half-duplex
1251-KX: 2-/4-wire leased line, full or half-duplex, point-to-point and multi-point
1244-PX: 2-wire dial-up, 2-/4-wire leased line, full or half-duplex, point-to-point and multi-point
Data Format Asynchronous: serial, binary
DTE Interface EIA-232-D, ITU-T V.24
Transmit Levels
Dial-up: -10 dBm
0 to -12 dBm programmable
Leased line: 0 dBm
Receiver Sensitivity
Dial-up: -10 to -43 dBm
Leased line: 0 to -33 dBm
Soft Carrier 900Hz
Training Time 8.7ms, 30ms, 60ms, 205ms
LED Display TXD, RXD, RTS, CTS, DSR, DTR, CXR, RI
Front Panel Keys
1250-PX: Voice/Data and Force Answer
1244-PX: ALB, RDLB, Transmit reversal
Chassis Sixteen 1244-PX's will mount in the 1681C, four 1244-PX's will mount in the 1604
Diagnostics Self-Test (ST), ALB, DLB, End-to-end
Dimensions
1250-PX/1251-KX: Height: 2.55"; width: 7.0"; length:
12"; weight: 2.2 lbs.
1244-PX: Height: 6.0"; width: .5"; length: 12.7"; weight: 1.1 lbs.
Power Requirements 110VAC—95 to 127VAC, 60Hz, optional 12VDC, 24VDC and 48VDC
Temperature Operating: 32°-122° F ambient; Store:-4°-158°F; Humidity:5-95%NC
Compliance
1250-PX: FCC Part 68, Part 15_Class B
1251-KX: FCC Part 68, Part 15_Class B
1244-PX: FCC Part 68, Part 15_Class A
1244-PX Auto-Dialer (requires optional 811 and 831 accessory cards)
Protocols Bell 801 and Vadic 831 language
Dialer Type & Data Type: Tone, pulse, and automatic
Bell 801data: Parallel RS366, binary
Vadic 831: Asynchronous, serial, 10bit
Ordering Information
The 1250-PX includes a telephone cable with RJ11C connector for dial-up connection. The 1251-KX modems include a telephone cable with spade lug connectors for leased line connections. The 1244-PX includes a dial-up telephone cable with RJ11C connector—P/N 15027-004. For optional 12VDC, 24VDC or 48VDC power supply indicate after model number (ex. 1250-PX, 12VDC).
Models Description
1250-PX External Bell 202S modem
1251-KX External Bell 202T modem
1244-PX Rackmount Bell 202S/T modem
Options
15044-004 1244-PX 4-wire leased line cable
15022-004 1244-PX 2-wire leased line cable
1681C Sixteen slot chassis for 1244-PX
1604 Four slot chassis for 1244-PX
811 Bell 801 rackmount dialer (RS366)
831 Adapter RS366 to RS232