HP 200 Series Services And Applications page 15

FDDI Ports
An FDDI port is used to connect an FDDI ring to the router using a class A
dual attachment station (DAS) or class B single attachment station (SAS) or
dual homing. An optical bypass switch can be connected between the router
and the DAS or SAS. The port has two FSD (fixed shroud duplex) connec-
tors, MIC A and MIC B (media interface connectors for FDDI rings). Both A
and B are used to attach a DAS; either A or B is used to attach a SAS. The
separate optical bypass connector is used, in addition, to attach the optional-
bypass switch (dual-switch module). Multimode fiber is required. The
wavelength used is 1300 nanoseconds.
WAN Connections and Services
The wide-area synchronous ports on HP routers do the following:
Provide access to frame relay, SMDS, and X.25 packet-switching
networks.
Provide access to switched circuits, including the public switched
telephone network (PSTN or POTS), switched 56-Kbit/second,
switched fractional T1, and ISDN networks.
Support link-terminating equipment, including modems (on the
PSTN), ISDN manual terminal adapters (modems in DTR mode),
V.25 terminal adapters for ISDN, and CSU/DSUs for the switched
digital network.
Support data compression over all point-to-point links. Whether data
compresssion is enabled is automatically negotiated between the
routers.
Allow load sharing between multiple WAN links of equal bandwidth
for the best use of leased lines between remote routers. Other
bandwidth management features are traffic prioritization and latency
control.
Support synchronous WAN connections using the HP universal
interface ports with the appropriate 5-meter interface cable (V.35,
X.21, RS-232 or V.24/V.28, RS-422/449 or V.36). HP routers automat-
ically sense which specific interface cable is connected. Wide area
link speeds up to 2.048 megabits per second are possible.
Features of HP Routers
WAN Connections and Services
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