Specifications

Chapter 1 Introduction Installation and Operation Manual
1-4 Overview ASMi-52CD Ver. 1.0
Table 1-3 and Table 1-4 detail the ASMi-52CD data rates with all possible
combinations of line/DTE interface types, line types, and clock modes.
Table 1-3. ASMi-52CD 2-Wire Data Rates
DTE Interface Clock Mode Data Rate
IR-ETH, IR-ETH/Q,
IR-ETH/QN, IR-IP
Internal N × 64 kbps (N = 1, 2, …, 32, 36)
IR-ETH, IR-ETH/Q,
IR-ETH/QN, IR-IP
Station N × 64 kbps (N = 1, 2, …, 32)
Table 1-4. ASMi-52CD 4-Wire Data Rates
DTE Interface Clock Mode Data Rate
IR-ETH, IR-ETH/Q,
IR-ETH/QN, IR-IP
Internal N × 128 kbps (N = 1, 2, …, 36)
IR-ETH, IR-ETH/Q,
IR-ETH/QN, IR-IP
Station N × 128 kbps (N = 1, 2, …, 36)
V.35, RS-530, X.21 Internal N × 128 kbps (N = 1, 2, …, 36)
V.35, RS-530, X.21 External N × 128 kbps (N = 1, 2, …, 36)
V.35, RS-530, X.21 Station N × 128 kbps (N = 1, 2, …, 36)
E1 Internal, external, station N × 64 kbps (N = 1, 2, …, 32)
Timing
ASMi-52CD supports three clock modes:
• Internal, derived from its internal oscillator
• LRS-24 station clock input
• External clock (only supported by 4-wire serial interfaces).
Remote Management
ASMi-52CD allows full management of the local and remote modems using SNMP
management or an ASCII terminal via the CM-2 card of the LRS-24 modem rack.
Management of the remote unit is achieved via an inband channel that allows
simultaneous remote configuration for both modems, real-time alerts on failures,
diagnostic tests, and statistical information on system performance. The
configuration parameters are stored in the card flash.
The modem uses an Embedded Operation Channel (EOC) for controlling and
monitoring the remote unit. The management channel operates without
interfering with data transmission.