Technical Support
1
Dual Stage Routing Systems
Technical Support
Dual Stage Routing Systems
Overview
A Dual Stage Routing (DSR) System is an Extended Routing System (ERS) with more inputs than
outputs, consisting of two or more distribution matrices that are linked and configured together.
DSR Systems are created for installations that require a large number of inputs and a considerably
smaller number of outputs. A DSR System has one or more (up to 16) pre-stage routers and one final-
stage router. The number of inputs equals the total number of inputs used on all of the pre-stage routers,
plus any inputs on the final stage router that are not connected to the outputs from the pre-stage routers.
The number of outputs equals the number of outputs used on the final-stage router.
Additional input and output boards (besides the ones that are configured to route as the DSR System) can
be included on any of the routers in a DSR System; however, the additional boards on any individual
router must be configured on a separate virtual matrix and can only be used for routing inputs to outputs
on that router.
Important:
The hardware and the distribution matrices used must support dual stage routing.
DSR System Setup – Example 1
The first DSR System setup example is for a 368x48 DSR System (see FIG. 1 on page 2) consisting of
the following three routers:
256x48 Epica-256 – used as the first pre-stage router
112x48 Epica-128 – used as the second pre-stage router
96x48 Epica-128 – used as the final-stage router
