Sts-3 Cascading Connectors; Shelf Id Switch; Trunk Module Location - Lucent Technologies Stinger MRT 19 Getting Started Manual

Preparing for the Installation
Verifying the hardware configuration

STS-3 cascading connectors

Each Stinger MRT and MRT-2 unit is equipped with a pair of STS-3 connectors. These
connectors can connect multiple units that are installed in a single location. The
STS-3 connectors allow creation of ATM links to carry traffic from a Stinger MRT or
MRT-2 unit that is not equipped with a trunk module to a unit that is equipped with
a trunk module. Several units can be linked together so that traffic can be combined
in a cascading fashion, until it reaches a single unit with a line to the distant ATM
switch. This can be managed in two ways.
Configured ATM connections—ATM connections can be configured to so that
traffic from all the units is combined in a cascading fashion, until it reaches the
unit with the link to the remote ATM switch.
Hosted (master/slave) connections—It is also possible for the unit with the link to
the remote ATM switch to act as the host (master) unit for the other MRT or
MRT-2 units. These other units become hosted (slave) units. All connections
between units are configured automatically by the TAOS software, and all
administration for the group is performed on the TAOS interface of the master
unit. For details about this type of configuration, see Appendix B, "Hosted
Operation of Cascaded Stinger MRT units."
Note
Lucent Technologies recommends connecting no more than three Stinger MRT
or MRT-2 units in cascading fashion or five units in a hosted system configuration.
Although the units can support longer distances, Lucent recommends that cascading
or hosted units be no more than 10 feet (3.05m) from each other.

Shelf ID switch

The shelf ID switch is used to designate the shelf number that will be associated with
the chassis in a hosted system configuration. See, "Configuring the remote shelves"
on page B-4 for details.

Trunk module location

A Stinger MRT can contain a trunk module that supports OC3/STM1, DS3, T1, or E1
service. Each trunk module supports connection to either optical or copper media,
depending on the type of module supplied. There is a single physical slot on the front
of the Stinger MRT for installation of the trunk module. This slot is referred to by the
operating system as virtual slot 18.
Caution
!
operating. Be sure to remove power from the unit before removing or replacing a
trunk module.
Note Individual trunk modules are not interchangeable between the Stinger MRT
23 and Stinger MRT 19. For detailed information about a specific trunk module, see
the chapter in this guide related to that module.
Figure 2-5 and Figure 2-6 show the location of the trunk module in the front of a
Stinger MRT 23 and Stinger MRT 19 chassis. An OC3-ATM trunk module is shown
installed.
2-6
Do not remove or replace the trunk module while the Stinger MRT unit is
Stinger® MRT Getting Started Guide