Application Guidelines
S0 and S1 Comparison
A-10
SpectraComm IP T1 Router Card
076R200-000
Installation and Operation Manual
Issue 13
S0 and S1 Comparison
Both serial0 (S0) and serial1 (S1) support the following WAN protocols: PPP, Frame Relay and
LAN-X. Any CSU/DSU that has a RS-232 DCE interface can be used with the serial1 (S1) port.
Therefore, the only difference between S0 and S1 is the physical interface. The S1 interface requires
an external CSU/DSU and generally can only run at lower speeds. However, the network
connection is flexible since the CSU/DSU can be a DDS, fractional T1 or others.
Because S1 is the same as S0 at the link layer (layer 2), all examples pertaining to PPP, Frame Relay
or LAN-X on the S0 interface are also applicable to the S1 interface.
demonstrates a typical configuration of SCIP with an external CSU/DSU, employing
the S1 interface
Figure A-3
Serial0 and Serial1 Comparison
CSU/DSU
Network
General
DataComm
SCIP-T1
CSU/DSU
ROUTER
E0
S1
DCE
NTWK
NTWK
Содержание SpectraComm IP T1
Страница 119: ......
Страница 120: ...The Best Connections in the Business...