Don’t waste your time and money on modems
and analog lines! Switch your async devices between
high-speed Frame-Relay or X.25 links instead!
Don’t waste your time and money on modems
and analog lines! Switch your async devices between
high-speed Frame-Relay or X.25 links instead!
V.35 Fradswitch A
© 2008. All rights reserved. Black Box Corporation.
FREE 24-hour Tech Support: 724-746-5500
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FEATURES
• Connect 8 or 24 async V.35 devices to
any of three X.25 or Frame Relay links.
• V.35 main links have a top aggregate
data rate of 2.15 Mbps.
• Async channels can be set for data rates
up to 115.2 kbps.
• Supports async, X.25, Frame Relay,
HDLC, SDLC, STM, and SLIP.
• Built-in management agent for configuration, monitoring, diagnostics, statistics,
and reports.
The Fradswitch can be the centerpiece of just about any packet-switched network.
OVERVIEW
Do you have X.25 or Frame Relay service? Would you like
to hook up a set of V.35 async equipment to one, two, or
three synchronous Frame Relay/X.25 wide-area links and
switch between them all?
That’s exactly what the V.35 Fradswitch Asynchronous
(Fradswitch A) is designed to do. It’s a high-performance
switch that you can use for routing between async devices
and X.25 or Frame Relay connections.
V.35 Fradswitch A models have three synchronous mainlink ports, and 8 or 24 V.35 equipment link ports, proprietarily
pinned out on RJ-45 connectors.
The main-link ports can be set to use any of several
protocols: Besides the standard ones for X.25 and Frame Relay,
the Fradswitch also supports HDLC and SDLC, the proprietary
stat-mux protocol STM (for use with our Stat-8 mux), plain
async, and SLIP/encapsulated IP.
If you configure these ports for async or IP/SLIP operation,
their maximum data rate is 115.2 kbps for each port. (This is
also the top rate for each async channel.) If you configure the
main-link ports to use a sync protocol, they have an aggregate
data rate of 2.15 Mbps; that is, the total of the three ports’
data rates, added together, can’t exceed 2.15 Mbps.
The V.35 Fradswitch A has a powerful terminal-based
menu system that enables you to configure it for many types
of packet-switching applications, then operate it with little or
no maintenance. The unit supports permanent virtual circuits
(PVCs) and switched virtual circuits (SVCs), call IDs, NUI
databases, aliasing, IP routing and routing tables, Frame Relay
funneling, X.32 (XID) tables, SNMP management and event
reporting, X.25 multicasting—and much, much more!
Multisession is also provided on each async channel; each
channel can access up to four separate sessions simultaneously. This Fradswitch feature makes it easy for you to
compare data from different sources.
The V.35 Fradswitch A is rackmountable, and it also has
flash memory, so you can keep upgrading it—with even more
features—for as long as we keep releasing new firmware
revisions.
V.35 Fradswitch A
(MT722A-35T-R2)
Frame Relay or
X.25
Frame-
Relay Host
Frame-Relay Router
LAN
CSU/DSU MS
(MT132V-R2)
V.35 Cable
(EYNT450)
RJ-45
Cable
Hub
PCs
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TECH SPECS
Clock Source — Internal or recovered from receive signal (independently
user-selectable for receive and transmit paths)
Command Modes — Async channels only: ITU-T X.28 and proprietary
extensions; ITU-T X.29
Compliance — CE (EN 55022, EN 50082-1, EN 60950), FCC Part 15 Subpart
B Class A, IC Class/classe A
Data Rate — Each async channel and each main-link port set as sync:
75, 110, 150, 300, or 600 bps, or 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6,
or 115.2 kbps, user-selectable;
Main-link ports set as sync (aggregate): Any combination of data rates
that, when added together, does not exceed 2.15 Mbps
Flow Control — Async channels only: X-ON/X-OFF
Logon Messages — Async channels only: Herald and bulletin (user-
definable)
Memory — 2 MB RAM
Packet Size — X.25: Up to 4096 bytes (4 KB);
Other protocols: Up to 8192 bytes (8 KB)
Protocols — Async channels (async only) and main-link ports set as async:
ITU-T X.28 or IP/SLIP, user-selectable; supports IP encapsulation
over X.25 (as per RFC 1356) or Frame Relay (as per RFC 1490); also
supports dialup links for X.25 with X.32 protocols;
Main-link ports set as sync:
Packet-switching: ITU-T X.25 or Frame Relay (user-selectable);
X.25: Complies with ITU-T X.25 (1988), LAP-B;
Frame Relay: Complies with ANSI T1.606, T1.617 Annex D, and
T1.618, as well as ITU-T Q.922 Annex A; also supports CLLM, LMI,
and ANSI PVC management protocols;
Data link (optional): HDLC, SDLC, or STM (proprietary, user-
selectable):
STM: Compatible with Stat-8 statistical multiplexor;
Management: SNMP
Terminal Handling — Enhanced, beyond ITU-T X.3 requirements
User Controls — On-screen terminal-based menu system, including SNMP
management; (1) Front-mounted recessed reset push button;
(1) Internal jumper on motherboard for power-up configuration
loading
Interface — Async channels: EIA/TIA RS-232, DCE, proprietarily pinned on
RJ-45;
Main-link ports (all DTE): ITU-T V.35
Connectors — All rear-mounted: MT720A-35T-R2: (8) RJ-45 F for async
channels;
MT722A-35T-R2: (24) RJ-45 F for async channels;
Both: (3) M/34 female for main-link ports
Indicators — (18) or (34) front-mounted LEDs: All models: (1) for unit
power; (1) for hardware error; (1) for buffer overflow; (1) for test
mode; (3) for main-link synchronization (one for each main-link
port); (3) for main-link activity (one for each main-link port);
MT720A-35T-R2: (8) for async channel activity (one for each async
channel);
MT722A-35T-R2: (24) for async channel activity (one for each async
channel)
Temperature Tolerance — 32 to 122° F (0 to 50° C)
Humidity Tolerance — Up to 90%, noncondensing
Power — From utility-power outlet, through included 6.5-ft. (2-m)
power cord and rear-mounted IEC 320 male inlet, to internal
transformer: Input: 100–230 VAC, 50–60 Hz (autosensing);
Fuse: Integral 0.5 A, 250 V;
Consumption: Up to 20 watts
Size — 1.7"H x 17"W x 11.7"D (4.3 x 43.2 x 29.9 cm)
Weight — 4.2 lb. (1.9 kg)
Item Code
V.35 Fradswitch A
with V.35 Main-Link Ports
8-Channel MT720A-35T-R2
24-Channel MT722A-35T-R2
If you need a CSU/DSU, order…
CSU/DSU MS MT132V-R2
You might also need a modem…
Modem 3600 MD1000A
…or a Modular Statistical Multiplexor…
Stat-8 MX866A
Remember to order cables…
Shielded Twisted-Pair Patch Cable (STP) with Snagless Boots,
4-Pair, RJ-45, CAT5, Stranded, PVC, Gray EVNSL60
V.35 Interface Cable (34-Conductor),
Male/Male EYNT450-MM
To purchase a modular adapter, or for help building one,
call Black Box Technical Support.
Guard your Fradswitch with surge protectors…
Surge Protectors
CAT5 100BASE-TX Surge Protector SP250A-R2
RS-232 DB25 (All Wires) Protector SP360A
V.35 Data Line Protector SP143A-R2
RS-422 Surge Protector, DB15 SP508A
MT720A-35T-R2
✦ V.35
Fradswitch A
✦
Power cord
✦
Control cable
✦
Rackmount kit
✦
User’s manual
✦
Packet Switching Guide
WHAT‘S INCLUDED
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