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4 Network Service Module
C613-03022-00 REV K
Devices Covered By This Document
This Hardware Reference includes information on the following Network
Service Modules (NSMs):
■ AT-AR040, four Port Interface Card (PIC) expansion bays
■ AT-AR041, eight ISDN Basic Rate S/T interfaces
■ AT-AR042, four ISDN Basic Rate S/T interfaces
■ AT-AR048, one unchannelised DS3 interface
You can download the complete document set for NSMs, and for your switch
or router, from www.alliedtelesis.com/support/software. For more
information about the document set and other resources, see “Obtaining
Documentation and Resources” on page 23.
Compatible Switches and Routers
The following table shows which NSMs are appropriate for different models of
switch and router.
AT-AR048 Support
Maximum DS3 packet forwarding rates are achieved only when the AT-AR048
is installed in a Rapier 48w switch, or a Rapier 24i switch whose serial number
ends with the letter N or higher. If maximum DS3 performance is not required,
you can install the AT-AR048 in any Rapier 24i whose serial number ends in J
or later. You can find the serial number on the underside of the switch (Figure 1
on page 5).
Table 1: Compatible switches and routers for Network Service Modules (NSMs)
Model(s) AR040 AR041 AR042 AR048
Rapier 8/8 (MT & SC) switch !!!
Rapier 16F-FX (MT-RJ & SC) switch !!!
Rapier 16Fi-FX (MT-RJ & SC) switch !!!
Rapier 24 switch !!!
Rapier 24i switch !!!!
Rapier 48w switch !!
AR816F-FX (MT-RJ & SC)
modular switching router
!!!
AR824 modular switching router !!!
AR740 router !!!
AR745 router !!!