I-Mux Service Unit ISU 512 with up to 4 x “S” 4-wire BRI ISDN ports

• Basic Rate ISDN inverse multiplexer or I-Mux
• Single or dual high speed serial ports
• Up to 4 ISDN 4-wire “S” interfaces
• One or two V.35, RS530, X.21/V.11 interfaces
• RS366, control lead, front panel or GUI dialling
• Speeds to 512kbps
• Supports BONDing standard
• Inter-works with other I-Muxes, including Adtran® ISU
• Interworks with DataBand CSI (Central Site I-Mux)
• Intuitive GUI and front panel control
• Local serial port, Ethernet and remote ISDN management
• Password protected
• Encrypted Management protocol
• NV RAM stores configuration
• Dual FLASH banks for updates
• New design using latest supportable components
• Extensive Approvals incl Telecoms
• Low power consumption
• RoHS compliant

Other configurations

• 2-wire “U” BRI interfaces see DataBand ISU 512U
• PRI E1/T1 interfaces with BRIs see DataBand ISU 1024
• ISDN satellite splitter see DataBand Splitter
• Multiple PRI and DTE central site unit see the DataBand CSI

Typical Applications

• Inter-connectivity of encryptors
• Video conferencing
• High speed file transfer
• Aggregation of several satellite links
• • Leased line backup

Patapsco’s DataBand ISU and CSI range connect high speed serial data devices together using multiple ISDN calls, in effect dialling a high-speed “leased line” between non-ISDN devices.
The 512S version is available with up to 4 x “S” 4-wire Basic Rate ISDN interfaces (these are common around the world) and can deliver data rates of up to 512kbps.
The “S” BRI interfaces can be individually switched between the standard TE presentation (connects to a carrier-delivered service) and NT
presentation (acts like a carrier interface and connects to other ISDN equipment). This feature gives added flexibility on service types and means other ISDN devices can also share the network resources (see diagram 7 below)
There is also a version with 2 x “U” interfaces and 2 x “S” interfaces which gives added flexibility if unsure of what ISDN services may be
available. The Cascade option allows the system to be further expanded.

Application Examples

1. Standalone Use

The I-Mux capability, using industry standard BONDing algorithms, aggregates the individually dialled and routed ISDN channels, re-ordering them and handling the differential delays between all of the ISDN calls.

2. Inter-Connection of Encryptors

ISDN on-demand access for V.35, RS530 and X.21/V.11 encryptors
RS366 dialling also supported.

And/or stand-alone to CSI Central Site I-Mux
(see separate data sheet)

3. Videoconferencing (VC)

ISDN access for non-ISDN videoconference units.
Inter-operates with VCs with internal ISDN ports and BONDing aggregation.
Dual-port version gives access to two attached devices, each sharing the ISDN at the same time, or using all the ISDN for one device.

4. High Speed File Transfer

Dial up high speed access when needed.

5. Leased Line Backup or Disaster Recovery

Dial backup capacity when needed, via an independent network.

6. Share ISDN access

Share ISDN services between data devices using the I-Mux capability and other ISDN equipment.
This example shows 3 BRIs (TE presentation) to the network and a BRI (NT presentation) to a STE encrypted telephone. The VC can
run at 384kbps when the STE is not in use, or at 256/320k when the STE is in operation.

7. Optional Cascade Port

A separate port allows another DataBand ISU to be inter-linked and to share the same ISDN access
Select an appropriate second ISU 512U, for example:

7a An ISU without ISDN to gain extra DTE ports or RS366
dialling port and sharing the primary unit’s ISDN access

7b Use a second DataBand ISU 512 (either with “U” or “S” interfaces) to gain extra DTE ports and extra ISDN ports.
Extra ISDN ports can be shared between both ISUs and different ISDN services (“U” or “S”) can be utilised, perhaps for resilience and flexibility.

Or gain access to extra ISDN “S” ports for other ISDN devices

For other ISDN switch, conversion and sharing capabilities see our Liberator range.

General

The DataBand ISU 512S is available in several versions:
• ISDN Interfaces
o 4 ISDN “S” 2-wire ports
o 2 ISDN “S” ports field upgradeable to 4 ISDN ports via
software key
o Zero ISDN ports (see Optional Cascade Port diagram 8)
o 4 ISDN ports with 2 x “U” (2-wire) and 2 x “S” (4-wire).
o “S” interfaces are switchable between TE and NT on a
per-port basis.
• Data or Serial Interfaces
Available with one or two factory-fit interfaces, fitted in any
combination
o V.35 “MRAC”
o RS530 25-way “D” – standard pin-out
o RS530 25-way “D” – Adtran compatible
o X.21/V.11 15-way “D”
o RS366 dialling port 25-way “D”
The ISU 512S supports a single interface to a DTE plus an RS366 dialling port, or one or two DTE interfaces (using a dialling method other than RS366).
All units use high-quality internal PSUs and are available with AC or DC inputs. The key-pad and LCD are designed for fast and simple operation of the device with minimal input required to perform the dialling functions. Detailed configuration is achieved via the GUI, which can be connected via the serial port (can be disabled), an Ethernet port (used only for configuration access and can be disabled) or via a remote ISDN call (can be disabled). Various Password levels are available if required.
The GUI (DbLite) is free of charge and provides configuration of one unit at a time. A networking version is available which gives visibility of multiple DataBand ISUs and central site CSIs – contact Patapsco for information.
The traffic between the Manager GUI and the device can be optionally encrypted via an AES256bit system with key exchange routines.
Unlike most other devices, the DataBand has formal Telecommunications Approvals for direct connection to carrier ISDN services.

Ordering Information

DB/ISU/512/AC Base unit with AC PSU*
DB/ISU/512/DC Base unit with DC PSU*
DB/ISU/512/4S 4 "S" ISDN interfaces (switchable NT/TE)
DB/ISU/512/2S 2 "S" ISDN interfaces (switchable NT/TE) field upgradeable to 4
DB/ISU/512/2U2S 4 ISDN interfaces – 2 “U” and 2 “S”
DB/ISU/512/00 0 ISDN interfaces (order “Cascade Option” below)
DB/ISU/512/CA Cascade option to inter-link two devices. Required in both units.
DB/ISU/512/DUAL Upgrade to enable 2nd DTE port
DB/ISU/512/V35 V.35 DCE female “MRAC” interface
DB/ISU/512/X21 X.21/V.11 DCE female 15-way “D”
DB/ISU/512/530 RS530 DCE female 25-way “D”
DB/ISU/512/366 RS366 dialling port female 25-way “D”
DB/ISU/512/RMK 19” Rack Mount Kit
DB/ISU/512/2U/UP Field upgrade from 2 “U” ISDN interfaces to 4
DB/ISU/512/SEC Security Management Pack
• Includes Manual and other documentation on CD, paper Quick Start guide, serial port Controller Cable.

Product Specifications

A. Network Interfaces
• Two or four 2-wire “S” interfaces. Dual port version field
upgradeable via software key to four ports.
• Version supporting 2 x 2-wire “U” and 2 x 4-wire “S”
interfaces.
• “S” interfaces are user switchable between TE and NT.
NT requires a crossed cable.
B. DTE Interfaces
Up to two factory-fit cards available. Any combination:
• V.35 “MRAC”
• RS530 25-way “D” – Adtran compatible
• X.21/V.11 15-way “D”
• RS366 dialling port 25-way “D” - Adtran compatible
C. LCD/Front Panel
• 2 x 16 character LCD
• 16 button key-pad
D. Out-going Dialling Options
• GUI
• Front key-pad/LCD
o Password protected
o Pre-stored numbers
o Manual entry of number(s)
• Control lead – pre-stored
• RS366
E. In-coming Call Options
• Accept all
• Accept authorised (CLI)
• Manual accept
• Reject all
F. Data Rates (BONDing)
64kbps to 512kbps
G. Inter-operability
BONDing compatible devices, including inverse multiplexers
H. ISDN switch compatibility
National 1 (USA), 5ESS, DMS100, Euro-ISDN
Patapsco have been shipping ISDN products across the world
for over 23 years and have experienced most “issues”.
DataBand GUI has many options to cater for different country’s
implementations and is extremely flexible.
I. Power
• AC
o Internal switch mode supply
o Standard IEC connector
o 95-240VAC auto-sensing
o Max current consumption 100mA @230VAC
• DC
o Internal supply
o Standard 4mm Terminal Block
o -33 to -75 VDC
o 0.35A max consumption
J. Physical
• 292w x 200d x 44h
• Metal chassis, front & rear panels
• 1.4Kg 2.4lb
• Optional 19” Rack Mount Kit
K. Environment
• Operating 0-55°C
• Humidity 10-90% non-condensing
• Natural convection cooling
L. Maintenance
There are no serviceable parts or maintenance required.
The battery used for the real-time clock and some NV RAM
elements has a 10 year (typical) life-time.
M. Approvals
• Safety
o ‘CE’ marked
o IEC60950-1:2nd Edition
o ACS/NZS60950:1:2003
• Emissions
o FCC Part 15 Class A
o EN55022:1998
o EN55024:1998-A12001
o EN61000-3-2/3:1995
o AS/NZS CISPR22:2000
• Telecoms
o TBR12/TBR13
o TBR4:1995, 1997 Amendment
o TIA/E1A-IS/968
o TNA117
o AS-ACIF-S006/S016
o CS-03 Canada
o TIA-968-A USA
• RoHS
o Compliant