Product SummaryRAD's IMX-4E1 and IMX-4T1 8/6 managed inverse multiplexers enable splitting and transmitting a high-speed data channel of up to 8/6 Mbps over (up to) four E1/T1 links. IMX-4E1 and IMX-4T1 8/6 managed inverse multiplexers span the bandwidth gap between E1/T1 and E3/T3, providing increased bandwidth where services higher than E1/T1 are either not available or too expensive. The IMX-4E1 and IMX-4T1 8/6 managed inverse multiplexers have a built-in 10/100 Ethernet bridge with VLAN support for LAN-to-LAN applications over four E1 or four T1 links. Benefits• Supports bandwidth on demand for efficient use of network resources • Low cost transport of broadband traffic reduces operating costs • Saves the cost of conversion equipment reducing capitol expenditures • Higher speeds, extended distance enables service providers to reach more customers • Transmission over multiple lines gives securer data transmissions • Plug-and-play installation Further Product InformationIMA enables optimal bridge and router ratesThe IMX-4E1 and IMX-4T1 inverse multiplexers transmit a single 6/8 Mbps data channel over multiple E1 or T1 links. They bridge the gap between E1/T1 and E3/T3, allowing bridges and routers to operate at their fastest rates. They also provide high speed access to SDH/SONET backbones where the only access services available are E1/T1 lines. The IMX-4E1 and IMX-4T1 provide immediate connection to installed applications. DTE interfaces are V.35, RS-530, X.21 and HSSI. The rate can be any multiple of 1.472 Mbps, up to a total of 5.888 Mbps in the IMX-4T1. The rate can be any multiple of 1.92 Mbps, up to a total of 7.68 Mbps in the IMX-4E1. Ethernet bridge with VLAN supportThe IMX-4E1 and IMX-4T1 have a built-in 10/100BaseT Ethernet bridge with VLAN support for LAN-to-LAN applications over four E1 or four T1 links. Resilient T1 or E1 linksLoad sharing over redundant links is performed to improve the resilience of high speed connections. If a T1 or E1 link fails, the communication link still remains open, but at a reduced speed (automatic rate fallback to lower speeds is supported). Timing options include: • Internal clock: internal oscillator is the source for E1/T1 links • Loopback timing: E1/T1 transmit clock is derived from E1/T1 receive clock • Station clock: source for E1/T1 transmit clock is framed/unframed all 1s or G.703 compatible Diagnostic loopbacks available include local DTE loopback, local E1/T1 loopback on all links and BERT V.52 through the remote IMX-4E1 and IMX-4T1. The IMX-4T1 supports T1 network loopback per AT&T 62411 (in-band code activated). Full statistical diagnostics capability is supported according to AT&T PUB 54016 for both E1 and T1. Local control and diagnostics are available via the front panel LCD or via an ASCII terminal. Call-out upon alarm and remote Telnet control are also supported. The IMX-4E1 and IMX-4T1 are compact 1U-high standalone units, with optional hardware for mounting in a 19" rack. 
High speed data over n x E1 lines
Native LAN over n x T1 lines
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