•High density modem rack
•2U high
•Accommodates copper and fiber optic modems
•Indicator LEDs on each card
•V.54 diagnostics available with several cards
•Redundant power supply
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The CMN-16 compact modem nest is a space-saving rack that houses up to 16 short range modem cards. Most of the cards carry two modems, doubling the capacity of the nest to up to 32 modems. The nest provides an inexpensive solution to central site racking of short range modems. In addition to short range modems, the nest supports interface converters, fiber optic modems and elastic buffers.
The following cards are available:
CMN-C6A– dual async short range modem card, compatible with SRM-5A, SRM-6A, SRM-3A
CMN-C6AC– dual async multipoint short range modem card, compatible with SRM-5AC, SRM-6AC
CMN-C6S– sync short range modem card, compatible with SRM-5S, SRM-6S
CMN-C6SC– sync multipoint short range modem card, compatible with SRM-5SC, SRM-6SC
CMN-C6TX– dual async 2-wire short range modem card, compatible with SRM-5TX
CMN-C8– sync/async short range modem card with V.54 loops, compatible with SRM-8, ASM-10/8
CMN-C8H– sync/async high speed short range modem card with V.54 loops, compatible with SRM-8H
CMN-CF8– sync/async fiber optic modem card with V.54 loops, compatible with FOM-8
CMN-C11– async short range modem card with V.54 loops, compatible with ASM-11, and with ASM-10/8 and SRM-8 in async mode
CMN-CEB– elastic buffer for connecting two independently clocked DCEs
CMN-C423/422– interface converter from RS-423/V.10 to RS-422/V.11
Several plug-in power supplies are available for 115/230 VAC and –48 VDC operation. The card nest can be supplied with two totally independent plug-in power supply units, providing redundancy and automatic backup. A standalone 115/230 VAC high power version supports two card nests via cable and card connection.
The CMN-16 is available as a 19" rack mount enclosure and is 2U (3.5") high.
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