ISDN Inverse Multiplexers

Central Site I-Mux

The DataBand CSI and ISU range connect high speed serial data devices together using multiple ISDN calls, in effect dialling a high-speed “leased line” between non-ISDN devices. It is ideal for use with videoconference units, MCUs, encryptors (such as KIVs) or any high-speed serial device that needs bandwidth on demand. It aggregates or inverse multiplexes multiple ISDN channels from multiple ISDN PRI interfaces into N*64kbps V.35, RS530, X.21/V.11 and E1 ports. A single CSI (Central Site I-Mux) supports from 1 to 8 ISDN PRIs for network access, and from 8 to 16 serial data ports with data rates of up to 1.024Mbps per port. CSIs can be linked together to form larger systems. Easy to manage and configure, the CSI is an ideal central-site solution for:

• New Inverse multiplexing and Terminal Adaptor applications
• Replacement of existing unsupportable legacy platforms
• Migrate and free-up multiple single port I-Muxes/aggregators at central sites and redeploy them at remote sites

DataBand ISU 512U - I-Mux Service Unit 512k with up to 4 x “U” BRI ISDN ports

The 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 512U version is available with 2 or 4 x “U” 2-wire Basic Rate ISDN interfaces (common in North America) and can deliver data rates of up to 512kbps. {There is also a version with both 2 x “U” interfaces and 2 “S” TE interfaces which gives added flexibility if unsure of what ISDN services may be available}. Available with 1 or 2 I-Mux serial ports. The ISDN can be partitioned between the 2 ports or access dynamically so 1 port can use all of the ISDN, for example. This gives a great deal of flexibility on potential speeds of different calls. The Cascade option allows the system to be further expanded.

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

The 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 and can deliver data rates of up to 512kbps. The “S” BRI interfaces can optionally 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. 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. Available with 1 or 2 I-Mux serial ports. The ISDN can be partitioned between the 2 ports or access dynamically so 1 port can use all of the ISDN, for example. This gives a great deal of flexibility on potential speeds of different calls. The Cascade option allows the system to be further expanded.

DataBand ISU 1024 - I-Mux Service Unit. Up to 1.024Mbps with an ISDN PRI plus up to 4 x BRI ISDN ports

The 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 1024 version is available with one PRI ISDN plus up to 4 Basic Rate ISDN interfaces and can deliver data rates of up to 1.024Mbps per serial port. Specifying a unit with 1 PRI (user switchable between E1 and T1) plus a mixture of 2-wire “U” BRIs and 4-wire “S” interfaces means users in the field can utilise whatever service is available to them. The “S” BRI interfaces can optionally 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. Available with 1 or 2 I-Mux serial ports. The ISDN can be partitioned between the 2 ports or access dynamically so 1 port can use all of the ISDN, for example. This gives a great deal of flexibility on potential speeds of different calls.