Communications Processors Comparison Columns
MANUFACTURER Advanced Computer Advanced Computer Amdahl Communications
Communications Communications
MODEL ACP 5100 ACP 6640 Amdahl 4745-110
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models DEC MicroVAX II, MicroVAX DEC VAX All IBM- and
3000 Amdahl-compatible
mainframes
Host-independent Network Processor No No No
Host Channel Extender No No No
Terminal Controller No Yes No
Store-and-Forward Messase Switching No No No
Distributed Processing No e Yes No No
Network Architecture Compliance HDLC DMIjISDN SNA, BSC, OSI. X.25
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex lines Attachable Vendor did not specify Vendor did not specify 64
Hitest line Speed Supported (bps} Tl (1.544M} T1 (1.544M) 256K
E ect on line Capacity. All lines Full Vendor did not specify Vendor did not specify None Duplex
COMMUNICATIONS FEATURES
MultiplexinQ/Demultiplexing No Yes Yes
T erminal-lnotiated Applications Switching No Yes Yes
Dynamic line Reconfiguration No No No
Interface to Ethernet LAN No No No
Protocol Conversion Vendor did not specify DMI NCP standard
Code Conversion None Vendor did not specify NCP standard
Error Control Vendor did not specify Vendor did not specify Parity check w/retransmit on error, LRC & CRC detection/correction.
parity
Automatic Transmission Speed Detection Vendor did not specify Yes NCP standard & COMMPRO Auto. Disconnect of Inactive Terminals Vendor did not specify Vendor did not specify Yes
SYSTEM CHARACTERISTICS
Processor Type Motorola 6800 Motorola 6800 Proprietary
Main Memory Word Size (bits} Vendor did not specify Vendor did not specify 32
Main Memory Storage Capac~ (b't;1eS} 512K 1M 4M
Data Unit Transferred Across /0 hannel ~e DMI Byte. block
Data Support, Memory and Comm. lines
o
A DMA BothMass Storage Vendor did not specify Vendor did not specify Interrupt. block Other Peripherals Vendor did not specify Vendor did not specify Interrupt, floppy I/O, Backup. and Diagnostic Peripherals Vendor did not specify Vendor did not specify FEP console, diskette,
Supported disk, control panel
Support for Remote Console No No Yes
Support for X.25 Level 3 Capabilities No No Yes
OPERATING SOFTWARE
0fpra,:;~fh~rem Implemented in Hardware Firmware Software, firmware Vendor did not specify Intemal self-load Download from host, disk
load
Additional Software Supported Vendor did not specify Vendor did not specify Vendor did not specify User Programmability Yes. via user-selected Yes, via user-selected No
perameters parameters
Software Separately Priced All Vendor did not specify All, NCP from IBM NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported Local/remote loopback, Vendor did not specify Local/remote loopback,
internal diagnostics internal diagnostics,
problem determination, port/line status
Data. Collected Node/link/software status,
port statistics Vendor did not specify Traffic loadin~, node/link/so ware status, line outages/hits, port stat8.; trace, error rates, events, link Idg .. NCP /Netview support PRICING AND AVAILABILITY
Minimum Configuration Vendor did not specify Vendor did not specify Vendor did not specify
Purchase Price ($} 4,200.00 10,000.00 91,500.00
Monthly Maintenance ($} Vendor did not specify Vendor did not specify 294.00
Monthly Lease/rental ($) Vendor did not specify Vendor did not specify Vendor did not specify Maintenance Bundled with Lease/rental Vendor did not specify Vendor did not specify Vendor did not specify Date of Announcement Vendor did not specify Vendor did not specify May 1988
Date of First Commercial Delive"6 Vendor did not specify Vendor did not specify June 1988
Number of Systems Installed to ate Vendor did not specify Vendor did not specify Vendor did not specify
Serviced by Vendor did not specify Vendor did not specify Amdahl
VENDOR PHONE NUMBER (805) 963-8801 (805} 963-8801 (408} 746-6000
COMMENTS
- -
Runs both NCP-4 for 3725and NCP-5 for 3745; backup architecture part of base
~~~S~~ f8gradeable to
JULY 1989 COPYRIGHT
@1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED DA T APRO RESEARCH, DELRAN NJ 08075 USA
270X/370X, EP, 370X/37X5, NCP. SNA/SDLC
Parity check w tetransmit on error, LRC CRC Interrupt, block Interrupt, interrupt FEP console, diskette, disk, control panel Yes
Yes
Software, firmware Download from host, disk load
Vendor did not specify No
All
Local/remote loopback, internal diagnostics, problem determination, port/line
status. NCP /NetView support Traffic loadinfk.v
node/link/so are status;
line outages/hits, port stats., trace, error rates, events, link Idg., NCP /NetView support Vendor did not specify 12,000.00
310.00
Vendor did not specify Vendor did not specify May 1988
June 1988
Vendor did not specify Amdahl
(408} 746-6000 Runs both NCP-4 for 3275 and NCP-5 for 3745; backup architecture part of basic design
C13-010-152 Processors
Communications Processors Comparison Columns
MANUFACTURER Bull HN Information Systems Bull HN Information Systems Bull HN Information Systems
MODEL DATANET 8/05 DPS 7000 DATANET 8/10 DATANET 8/20
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models Bull DPS 7000 Bull DPS7, DPS7000, DPS8, DPS7, DPS7ooo, DPS8,DPS88, DPS8ooo, DPS88, DPS90, DPS90, DPS8ooo, DPS9000 DPS9000
IBM Emulation 370X/37X5, NCP 370X/37X5, NCP 370X/37X5,NCP
PU Type within Network PU Type 5,DSA node/FE to
host DSA node PU Type 2, PU Type 4, DSA
node
Remote Line Concentrator No Ves Yes
Max. Hosts Served by One Concentrator 1000 1000 1000
Host-independem Network Processor No Yes Yes
Host Channel Extender No No No
Terminal Controller Ves Yes Yes
Store-and-Forward Message Switching No No No
Distributed Processing Node No No No
Network Architecture Compliance BSC, OSI, X.25, DSA BSC, OSI, DSA SNA, BSC, OSI, X.25, DSA COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable 15 31 127
Hmhest Line Speed Supported (bps) 64K 64K 2.5M
E ect on Line Capacity, All Lines Full Load dependent. protocol Load dependent, protocol Load/protocol
Duplex dependent dependent dependent
COMMUNICATIONS FEATURES
MultiplexinQ/Demultiplexinll Yes Yes Ves
Terminal-Initiated ApplicatIons Switching Yes Yes Yes
Dynamic Line Reconfiruration Ves Yes Yes
Imerface to Ethernet AN No No No
Protocol Conversion Async, VIP, DSC, RCI Async, VIP, DSC, RSI SDLC to X.25
Code Conversion ASCII to EBCDIC ASCII to EBCDIC ASCII to E8CDIC
Error Control Parity check w /retransmit Parity check w lretransmit Parity check w/retransmit on error, LRC & CRC on error, LRC CRC on error, LRC & CRC detection/correction, detection/correction, detection/correction,
parity parity
~&~o
9600Automatic Transmission Speed Detection 300 to 4600 300 to 96oo
Auto. Disconnect of Inactive Terminals Yes Ves Yes
SYSTEM CHARACTERISTICS
Processor Type Proprietary Proprietary Proprietary
Main Memory Word Size (bits) 16 16 16
Main Memory Storage Capacity (bytes) 2M 2M 2M
Data Unit Transferred Across I/O Channel Word, 36 bit Word (36 bit) Word (36 bit) Data Support, Memory and Comm. Lines Both DMA, interrupt, both Both Mass Storage Vendor did not specify Vendor did not specify Not applicable
Other Peripherals DMA DMA DMA
I/O, Backup, and Diagnostic Peripherals FEP console, FEP console, host/ FEP console,
Supported diskette, host/mainframe mainframe diskette, host/mainframe
Support for Remote Console Yes Yes Yes
Support for X.25 Level 3 Capabilities Yes Yes Yes
OPERATING SOFTWARE
0fp'1ratin1/, System Implemented in Software, firmware Software, firmware Software, firmware
PL met od Download from host, IPL Download from Download from host, IPL
diskette, tele-Ioad host, tele-Ioad diskette, tele-Ioad Additional Software Supported Vendor did not specify Vendor did not specify Vendor did not specify
User Programmability No No No
Software Separately Priced All All All
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported Local/remote loopback, Local/remote loopback, Local/remote loopback, internal diagnostics, internal diagnostics, internal diagnostics, problem determination, problem determination, problem determination, port/line status, network pon/line status, network port/line status, network
management management management
Data Collected Traffic 10adinK' Traffic 10adinK' Traffic 10adinK'
node/link/so ware status, node/link/so ware status, node/link/so ware status, accounting, line outages, accounting, line outages, accounting, line outages, port statistics, trece, port statistics, trace, pon statistics, trace, error rates, events, link. error rates, events, link error rates. events. link
loading loading loading
PRICING AND AVAILABILITY
Minimum Configuration Vendor did not specify Vendor did not specify Vendor did not specify
Purchase Price ($) 12,000.00 33,890.00 47,990.00
Monthly Maintenance ($) 150.00 244.00 329.00
Monthly Lease/rental ($) Vendor did not specify 1,160.00 1,640.00
Maintenance Bundled with Lease/rental Vendor did not specify No No
Date of Announcement Aprillg87 September 1985 September 1985
Date of First Commercial Delive1> September 1987 September 1985 September 1985
Number of Systems Installed to ate 32 58 167
Serviced by Bull Worldwide Info Sys Bull Worldwide Info Sys Bull Worldwide Info Sys
VENDOR PHONE NUMBER (508) 671-6000 (508) 671-6000 (602) 862-8000
COMMENTS
- -
-COPYRIGHT
©1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED DATAPRO RESEARCH, DELRAN NJ 08075 USA
Bull HN Information Systems
DATANET 8/30
Bull DPS7, DPS7000, DPS8, DPS8000, DPS88,DPS90, DPS9000
Load dependent, protocol dependent Parity check w /retransmit on error, LRC & CRC DMA, interrupt, both Vendor did not specify DMA
FEP console,
diskette, host/mainframe Yes
Yes
Software, firmware Download from host, IPL diskette, tele-Ioad Vendor did not specify No
All
Local/remote loopback, intemal diagnostics, problem determination, port/line status, network management
Traffic loading, node/link/software status, accounting, line outages, port statistics, trace, error rates, events, link loading
Vendor did not specify 47,990.00
329.00 1,640.00 No
September 1985 September 1985 167
Bull Worldwide Info Sys (508) 671-6000
-JULY 19B9
Communications Processors Comparison Columns
MANUFACTURER Chi Corp. Computer Network
Technology Corp. Computer Corp.
MODEL 3205/3212 CHANNELIink 5000 3800/3890
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models Unisys 1100 series IBM S/370 & compat., Cray IBM S/370, 43XX, 30XX &
Supercomputers, DEC/V AX-BI compatibles Bus
Direct Attachment to Host Yes Yes Yes
FUNCTIONAL CHARACTERISTICS
Front-end Processor Yes Yes Yes
Max. Hosts attachable to FEP 2 B/unit 4
Max. Hosts Supported Simultaneously 2 255/network 4
IBM Emulation None CTCA Not applicable
PU Type within Network PU Type 2 Channel attached Not applicable
Remote Line Concentrator Yes Yes Yes
Max. Hosts Served by One Concentrator Unlimited 255 4
Host-independent Network Processor Yes Yes Yes
Host Channel Extender No Yes Yes
Terminal Controller Yes Vendor did not specify No
Store-and-Forward Message Switching No Yes No
Distributed Processing Node No Vendor did not specify No
Network Architecture Compliance OSI, X.25 TCP/IP Transparent
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable 24 16 8 full-duplex
Hw,hest Line Speed Supported (bps) 64K 4.0M 1.544M
E ect on Line Capacity, All Lines Full None None None
Duplex
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing Yes Yes No
Terminal-Initiated Applications Switching Yes No Yes
Dynamic Line Reconfiguration Yes Yes No
Interface to Ethernet LAN Yes Yes No
Protocol Conversion Async to uniscope Yes No
Code Conversion ASCII/EBCDIC/XS3 None None
Error Control LRC & CRC LRC & CRC LRC & CRC
detection/correction detection/correction detection/correction
Automatic Transmission Speed Detection 110-19.2K Up to 4.0M No
Auto. Disconnect of Inactive Terminals Yes No No
SYSTEM CHARACTERISTICS
Processor Type Concurrent computer 3205 MC68020 Z80B, IBM Series/1
Main Memory Word Size (bits) 32 32 16
I/O, Backup, and Diagnostic Peripherals FEP console, diskette, FEP console FEP console, diskette
Supported patch panel
Support for Remote Console Yes Yes Yes
Support for X.25 Level 3 Capabilities Yes No No
OPERATING SOFTWARE
Operating System Implemented in Software, firmware Firmware Software, firmware IPL method Download from host, IPL Internal self-load Internal self-load, IPL
diskette diskette
Additional Software Supported Development, communications Vendor did not specify Vendor did not specify User Programmability Yes, via user-selected Yes, via user-selected Yes, via console
parameters parameters
Software Separately Priced Some Some None
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported Local/remote loopback, Local/remote loopback, Internal diagnostics internal diagnostics, internal diagnostics.
port/line status problem determination, port/line status
Data Collected Node/link/software status, Traffic loading, Traffic loading, line line outages, port node/link/software status, outages, trace, line hits, statistics, trace. line line outages, port error rates. data hits, error rates statistics, trace. line display /rt monitor
hits, error rates, events.
link loading PRICING AND AVAILABILITY
Minimum Configuration Vendor did not specify Vendor did not specify Vendor did not specify
Serviced by Chi Corporation Computer Network Tech Computerm, IBM
VENDOR PHONE NUMBER (216) 831-2622 (612) 420-4466 (412) 391-7804
COMMENTS Pre~onfi~red, dynamic Network support for remote Channel extension support routing. async screen peripherals for printers, CRTs, check editors, auto term. prot. sorters, mag tape, & front detect., redund., multi. ends w / satellite efficient
loc./rem. hosts, VTS protocols
emul., VTS on X.25 ntwk
JULY 1989 COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED DATA PRO RESEARCH, DELRAN NJ 08075 USA
Digital Communications Associates, Inc.
DCA/Series 300
Most vendors
SNA/SDLC, 27BO/3780/HASP PU Type 2
Parity check w /retransmit on error, LRC & CRC detection/correction, parity, ARQ-CRC 300 to 19.2K
FEP console, diskette, disk, magnetic tape, printer Yes, via user-selected parameters, user-created programs, and via console Some
Local/remote loopback, internal diagnostics, problem determination, port/line status Traffic loading, node/link/software status, accounting. line outages, port statistics. trace, line hits, error rates. maximum 24 processors;
TCP /IP support, OSI network management, DCA/DNMS compatible
C13-010-154 Processors
Communications Processors Comparison Columns
MANUFACTURER Infotron Systems Corp. Infotron Systems Corp. International Business Machines Corp. (IBM)
MODEL 892NP 990NP 990NP/992NP IBM 3270
COMPUTER SYSTEMS INTERFACED
Not applicable
Manufacturer/Models Not applicable IBM 43XX, 303X. 308X, 309X
Direct Attachment to Host No No Ves
Host-independent Network Processor Ves Ves No
Host Channel Extender No No No
Terminal Controller No No No
Store-and-Forward Message Switching No No No
Distributed Processing Node Ves Ves No
Network Architecture Compliance Proprietary Proprietary SNA
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex lines Attachable 104 channels 640 28
Highest Line Speed Supported (bps) 64K 64K 64K
Effect on Line Capacity, All Lines Full None None None
Duplex
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing Ves Ves Ves
Terminal-Initiated Applications Switching Ves Ves No
Dynamic Line Reconfiguration Ves Ves Ves
SYSTEM CHARACTERISTICS
6502,80186
Processor Type 6502,8086,80186 Proprietary
Main Memory Word Size (bits) Not applicable Vendor did not specify 18
Main Memory Storage Capacity (bytes) Not applicable Vendor did not specify 1 M, expandable to 2M Data Unit Transferred Across I/O Channel Not applicable Vendor did not specify Block
Data Support, Memory and Comm. Lines DMA, interrupt DMA, interrupt DMA
Mass Storage Not applicable Vendor did not specify DMA
Other Peripherals Not applicable Vendor did not specify DMA
110, Backup, and Diagnostic Peripherals FEP console, network manager FEP console, diskette FEP console Supported
Support for Remote Console Ves Yes Ves
Support for X.25 level 3 Capabilities No Ves Ves
OPERATING SOFTWARE
O~r~~ih;Jstem Implemented in Firmware Software, firmware Software
Internal self-load EEPROM Internal self-load
Additional Software Supported Vendor did not specify Not applicable ACF/NCP, NTO, NPSI, NRF, Yes, via console Yes, via console
NPDA, ACF/TCAM
User Programmability Ves
Software Separately Priced Some Some All
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported Local/remote loopback,
problem determination Ves Ves
Data Collected Traffic loading, line Ves Ves
outages, trace, error rates, events
PRICING AND AVAILABILITY
Minimum Configuration Vendor did not specify Vendor did not specify Vendor did not specify
Purchase Price ($) 11,000.00 20,000.00 Vendor did not specify
Monthly Maintenance ($) Vendor did not specify Vendor did not specify Vendor did not specify Monthly Lease/rental ($) Vendor did not specify Vendor did not specify Vendor did not specify
Maintenance Bundled with Lease/rental No No No
Date of Announcement Vendor did not specify Vendor did not specify Vendor did not specify
Date of First Commercial Delivery October 1984 1984 1986
Number of Systems Installed to Date 30 6,000 ~~dor did not specify
Serviced by Infotron Infotron
VENDOR PHONE NUMBER (609) 424-9400 (609) 424-9400 (914) 765-1900
COMMENTS 8 nodes per network; Provides adaptive routing; Contact local IBM rep.
ANM-8oo network manager comprehensive network optional; multiple links up management features; bisync to 64K, auto alternate emulation and
routing async/BSC/SDLC support
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED DA T APRO RESEARCH, DELRAN NJ 08075 USA Vendor did not specify Ves
256 with expansion 256K (L1C Type 4B) Internal self-load
NCCF, NPDA, ACF/NCP-PEP,
(
Communications Processors Comparison Columns
MANUFACTURER International Business International Business Lemcom Systems, Inc.
Machines Corp. (IBM) Machines Corp. (IBM)
MODEL IBM 3745 130/150/170 IBM 3745 210/410 Communications Micro
Controller 32 COMPUTER SVSTEMS INTERFACED
Manufacturer/Models IBM 43XX, 937X, 308X, 3090 IBM S/370, 43XX, 937X, IBM S/360, S/370, 30XX,
Max. Hosts Served by One Concentrator Vendor did not specify Unlimited Not applicable
Host-independent Network Processor No No No
Host Channel Extender No No No
Tarminal Controller No No No
Store-and-Forward Message Switching No No No
Distributed Processing Node No No No
Network Architecture Compliance SNA SNA, X.25 Not applicable
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable Vendor did not specify 512 8
H#Jhest Line Speed Suppo"ed (bps) Vendor did not specify 1.544M 57.6K
E eet on Line Capacity, All Unes Full None None None
Duplex
COMMUNICATIONS FEATURES
Multiplexinlj/Demultiplexing Ves Ves No
T erminai-lnltiated Applications Switching No No No
Dynemic Line RecOnfi~ation Ves Ves No
Interface to Ethernet N No No No
Protocol Conversion Ves Ves Custom
Code Conversion Ves Ves ASCII to EBCDIC
Error Control LRC & CRC LRC & CRC Parity check w /retransmit
detection/correction detection/correction on error Automatic Transmission Speed Detection Ves Vendor did not specify Ves Auto. Disconnect of Inactive Terminals No Vendor did not specify Ves SVSTEM CHARACTERISTICS
Processor Type Proprietary Proprietary Motorola 6800
Main Memory Word Size (bits) 18 Vendor did not specify 8
Main Memory Storage CapaCity, (b~es) Vendor did not specify 8M (perCCU) 80K
Deta Unit Transferred Across /0 hannel Block Block Byte, block
Date SUPPO", Memory and Comm. Lines DMA DMA Interrupt
Mass Storage DMA DMA None
Other Peripherals DMA DMA None
I/O, Backup, and Diagnostic Peripherals FEP console Vendor did not specify FEP console Suppo"ed
SUPPO" for Remote Console Ves Ves Ves
Suppo" for X.25 Level 3 Capabilities Ves Ves No
OPERATING SOFTWARE
0fptn:::~'f.:Jstem Implemented in Software Software Firmware Internal self-load Internal self-load Internal self-load Additional Software Suppo"ed Vendor did not specify ACF/NCP V%, EP, NTO, Problem determination aids
User Programmability ACF/VTAM, Netview
Ves Ves Ves, via user-selected
parameters
Software Separately Priced All All Utilities only
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Suppo"ed Ves Ves Local/remote loopback,
internal diagnostics, problem determination
Data Collected Yes Ves Trace
PRICING AND AVAILABILITY
Minimum COnfi~uration Vendor did not specify Vendor did not specify Vendor did not specify Purchase Price $) Vendor did not specify Vendor did not specify 10,000.00
Monthly Maintenance ($) Vendor did not specify Vendor did not specify Vendor did not specify Monthly Lease/rental ($) Vendor did not specify Vendor did not specify Vendor did not specify
Maintenance Bundled with Lease/rental No No No
Date of Announcement 1989 Vendor did not specify Vendor did not specify
Dete of First Commercial Delive'b 1989 March 1988 November 1980
Number of Systems Installed to ate Vendor did not specify Vendor did not specify 75
Serviced by IBM IBM National Advanced Sys.
VENDOR PHONE NUMBER (914) 765-1900 (914) 765-1900 (602) 944-1543
COMMENTS Contact local IBM rep. Contact local IBM rep. Microprocessor-directed FEP; front-end polling and console SUPPO" available;
OEM discounts
JULY 1989 COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED DATAPRO RESEARCH, DELRAN NJ 08075 USA
Lemcom Systems, Inc.
Communications Micro Controller 4 370X/37X5, custom Not applicable Not applicable 4 Parity check w /retransmit on error
Ves Ves Motorola 6800 8 Internal self-load Problem determination aids Yes, via user-selected parameters
Utilities only Local/remote loopback, internal diagnostics, problem determination Trace console suppa" avai able;
OEM discounts
C13-010-156 Processors
Communications Processors Comparison Columns
MANUFACTURER Lamcom Systems, Inc. Lamcom Systems, Inc. NCR Comten
MODEL Communicatlona Micro Distributed Network Model 5620
Controller a Processor Series COMPUTER SYSTEMS INTERFACED
Manufacturer/Models IBM 5/360, 5/370, 30XX,
43XX, & compat. Vendor did not specify IBM 360/370, 303X, NCR
IBM Emulation 270X/370X, EP, custom 270X/370X, EP, 370X/37X5, 270X/370X, EP. 370X1:,37X5, SN'¥,SDLC, 370X BSC NCP, 3270 BSC, SNA/ DLC
PU Type within Network Not applicable PU ype 2 PU Type 4
Remote Line Concentrator No Yes Yes
Max. Hosts Served by One Concentrator Not applicable 32 Vendor did not specify
Host-independent Network Processor No Yes No
Host Channel Extender No Yes Yes
Terminal Controller No Yes Yes
Store-and-Forward Message Switching No Yes No
Distributed Processing Node No No Yes
Network Architecture Compliance Not applicable SNA, OSI. internal SNA, BSC, OSI. X.25 COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable 8 3,000 64
Hitest Line Speed Supported (bps) 57.6K 64K T1 or token ring
E ect on Line Capacity, All Lines Full None Load dependent Load dependent
E ect on Line Capacity, All Lines Full None Load dependent Load dependent