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Introduction & Specifications
A Transport Mode Application
The asynchronous transport mode of the SC-ADT links async equipment together over the
customer's IP network. The SC-ADT encapsulates the async traffic into IP packets and forwards the
data over Ethernet to the local router/bridge (or to companion product, the SCIP router) for transfer
over the IP network. The async data at any local SC-ADT port can be forwarded to any async port
at any remote SC-ADT location.
Each SC-ADT front panel connector allows connection with up to eight local asynchronous
customer equipment ports. For higher density requirements, simply add more SC-ADT devices to
the ethernet segment at each site. Individual async data ports are configurable for Baud, Data/Start/
Stop Bits and Parity. External adapters allow connections to either terminal (DTE) or modem
(DCE) devices.
Figure 1-4
shows multiple sites with async equipment linked together over the customer's IP
Network. Any DTE at any SC-ADT site can exchange async traffic with any other DTE.
Note
The SC-ADT device is required at both ends of a link to support the proprietary encapsulation scheme.
SC-ADT SITE 'A'
General
DataComm
Async
. .
. .
Ports
9 - 16
Async
Async equipment at all SC-ADT sites can
exchange data across the IP network.
Figure 1-4
1-10
ROUTER
or SCIP
Ports
1 - 8
DTE #1
DCE #4
Asynchronous Data Transport in a Typical Multi-Point IP Network
SpectraComm ADT
Installation and Operation Manual
SC-ADT Applications Overview
ROUTER
or SCIP
General
DataComm
Async
DTE #2
. .
. .
Async
DCE #5
ROUTER
or SCIP
General
DataComm
Async
DTE #3
.
. .
.
Ports
Async
9 - 16
DCE #6
SC-ADT SITE 'B'
Ports
1 - 8
Ports
9 - 16
SC-ADT SITE 'C'
Ports
1 - 8
076R172-000
Issue 6
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