ASM Short Range Modems

ASM-40	ASM-31	ASM-10/8

The ASM-40 is a high speed synchronous short range modem operating at 13 selectable data rates, from 32 kbps up to 2.048 Mbps with a range up to 1.75 km (1.1 miles).

The ASM-31 multirate sync/async short range modem operates full duplex over a 2-wire twisted pair. The ASM-31 can operate at selectable data rates from 1.2 kbps to 128 kbps.

The ASM-10/8 is a sync/async short range modem operating full or half duplex over twisted pair, unconditioned lines in point-topoint applications. It has a range of up to 10 km (6.2 miles) and operates at nine selectable rates up to 19.2 kbps.

Features

ASM-40
• Selectable data rates: 32 kbps to 2.048 Mbps
• Range up to 1.75 km (1.1 miles)
• V.54 diagnostics
• Digital interfaces: V.24, V.35, X.21, RS-530, V.36/RS-449, Ethernet (bridge) or G.703 (HDB3)
• Optional built-in router

ASM-31
• Selectable data rates: – 1.2 kbps up to 128 kbps (sync) – Up to 38.4 kbps (async)
• 2-wire full duplex
• Adaptive echo canceller
• Range up to 8 km (5 miles) over 24 AWG lines
• 2B1Q line code
• DTE interfaces: V.24/RS-232, V.35, V.36, RS-530, X.21, Ethernet (bridge) or G.703 codirectional (64 kbps)
• Optional built-in router

ASM-10/8
• Full or half duplex over 4-wire
• Data rates up to 19.2 kbps
• Range up to 10 km (6.2 miles) at 19.2 kbps
• Controlled or continuous carrier
• V.54 diagnostics
• Automatic equalizer