RAD APS-8, APS-16, APS-24 8-, 16-, 24- Channel Multiprotocol
FRADs/PADs and Switches
- 8, 16 or 24 Async channel FRAD / X.25 PAD with
three multiprotocol ports
- Async data rate up to 115.2 kbps
- SLIP/PPP supported on all Async ports
- Protocols supported: Frame Relay, X.25, IP, HDLC,
SLIP, PPP, ML-PPP and Async
- IP support:
- RIP1, RIP2 and static routing
- Standard IP encapsulation over Frame Relay (RFC
1490), or X.25 (RFC 1356) networks
- Standard bridging
- Telnet client / server to support terminal / server
- SNMP management using RADview PC / UNIX platforms
- Optional built-in Ethernet interface, allowing easy
integration of LAN segments
- Optional support for ISDN: Frame Relay / X.25 / PPP
/ ML-PPP can be transmitted over the ISDN media
- FLASH memory for software upgrade
- APS-8, APS-16 and APS-24 provide access to public
or private Frame Relay networks. Async data is sent directly over the
Frame Relay or encapsulated over X.25 / Frame Relay (Annex G), to achieve
- A unique funneling mechanism adjusts feeder
throughput to CIR levels.
- LMI and ANSI PVC management protocols are supported
and operation is in compliance with ANSI T1.606, T1.618, T1.617, Annex D,
and ITU Rec. Q.922 Annex A.
- X.25-configured links support permanent virtual
circuits (PVCs) or switched virtual circuits (SVCs). Link packet size is
- APS-8, APS-16 and APS-24 support both mandatory and
additional ITU X.25 facilities.
- Dial-up X.25 links are supported via a dial-up
modem controlled by a DTR signal or V.25 bis commands.
- APS-8, APS-16 and APS-24 support X.25 multicasting.
- APS-8, APS-16 and APS-24 support X.32 protocol for
a dial-up X.25 link. This enables users to access an X.25 network
remotely, via a dial-up modem with X.32, or to use the backup dial-up link
for an X.25 or Frame Relay network.
HDLC TRANSPARENT ACCESS
- Each of the three switch ports can be programmed to
operate with transparent HDLC for connecting bridges, routers and other
HDLC communication devices over X.25 or Frame Relay networks. The HDLC
protocol is encapsulated over X.25 or Frame Relay, providing end-to-end
- All async channels can act according to X.3, X.28
and X.29 profiles at traffic speeds of up to 115.2 kbps. Async traffic can
be packetized directly over a Frame Relay network, or packetized over the
X.25 network. All channels are configured and monitored by the management
agent of APS-8, APS-16 and APS-24.
- Each one of the APS-8, APS-16 and APS-24 ports can
be configured to SLIP or PPP modes, operating at data rates of up to 15.2
- IP datagrams can be routed over Ethernet, PPP or
SLIP links and over Frame Relay networks (according to RFC 1490) or over
an X.25 network (according to RFC 1356).
- APS-8, APS-16 and APS-24 support RIP1, RIP2 and
triggered acknowledgment RIP messages (according to RFC 1058, 1723 and
1724). The RIP support enables easy IP connection while minimizing IP user
configuration. The triggered RIP enables reduction of the overhead
associated with the RIP mechanism, by minimizing the number of periodic
- Static IP routing is supported. IP packets are
routed to destination via SLIP, PPP, LAN (Ethernet), X.25 or Frame Relay
link, according to the IP address.
- The Ethernet interface enables bridging and/or
routing of LAN packets over a Frame Relay network (according to RFC 1490)
and over an X.25 network (according to RFC 1356).
- PPP/Frame Relay/X.25 can be transmitted over the
- ISDN support includes up to 128 kbps (Bundle two B
- APS-8, APS-16 and APS-24 contain an SNMP agent,
which enables remote configuration, collection of statistics / status
reports, and diagnostics. The management agent can be programmed to
periodically send statistics and status reports to a maximum of five
- Configuration, monitoring and controlling of all
network resources can be performed from a RADview-PC or
RADview-HPOV/UNIX SNMP management station.
- A management station can be connected directly to
APS-16 and APS-24 through LAN, PPP or SLIP.
- APS-8, APS-16 and APS-24 SNMP agent support private
and standard MIBs, including MIB II with RFC 1213, RFC 1381 and RFC 1382
for X.25, and RFC 1315 for Frame Relay.
- Enhanced backup facilities include PSTN/ISDN
- Frame Relay, X.25 and PPP can be transmitted over
the ISDN media.
- APS-8, APS-16 and APS-24 features an automatic
return to main link facility after a network recovery.
Figure 1 - Terminal / Server Emulation Application
Figure 2 - Consolidating IP (Ethernet) and Async Traffic over FR/X.25