6TAENG201-1E
TOTAL ACCESS 3000/3010
ENG-201
Page 16 of 32
© 2002, ADTRAN, Inc.
Total Access
®
3000/3010 System Manual
1.4
Management Interfaces
1.4.1
Intershelf Management
NOTE
ADTRAN recommends that the Total Access 3000/3010 shelves not be
daisy-chained when using SNMP. In this configuration, each shelf should be
equipped with a SCU and connected to an Ethernet hub.
When multiple Total Access 3000/3010 shelves are to be used in the same central
office, they can be daisy-chained together to allow monitoring and provisioning for up
to 16 shelves from a single interface. When connecting these shelves, communication
to the entire cluster can be made via the “Host” SCU.
The SCU provides a craft interface device connection to the DB-9 port in the front of
the SCU or is connected to the DB-25 port on the backplane (J31/J18 and labeled
ADMIN).
When connecting to the rear Admin port as the craft interface, a null modem cable
must be used. When a SCU is used as the host, monitoring and provisioning can occur
via the DB-9 or DB-25 pin connectors. In addition, the SCU has the capability to
interface to an X.25 network via a second DB-25 port (J30/J17 and labeled NTWK
MGMT) and to an IP/Lan via an RJ45 jack (J32 and labeled E-NET), both located on
the backplane. All shelves in the daisy chain that are served by a SCU host can
interface to the X.25 network.
It is important to note that when daisy chaining sheves, only one SCU is provisioned
as the host.
To daisy chain up to 16 Total Access 3000/3010 shelves, use a 22 to 24 gauge wire
(two wire with drain). ADTRAN recommends the AT&T
®
P7 gray sheathed wire.
is a logical diagram of the daisy-chained configuration between two Total
Access shelves. The “A” OUT is wired to the downstream “A” IN; the “B” OUT is
wired to the downstream “B” IN; and the shield OUT is wired to the shield IN. The
OUT of the first shelf will go into the IN of the subsequent downstream shelf, up to 16
shelves.
