Managed G.703 E1 CSU/DSU Concentrator
ERM01 Managed G.703 E1 CSU/DSU Concentrator
The ERM01 is a 4U 19(23)" concentrator rack type E1 DSU/CSU for Fractional and Unframed G.703 E1 Access for central office installations. There are 13 slots available for hot swappable G.703 E1 cards. An optional SNMP card can be installed into the last slot for configuration and management, leaving 12 slots available for G.703 cards. The SNMP card provides both local control via an RS-232 serial console port and remote IP management using Telnet or industry standard SNMP protocol. Each E1 card may be linked to a remote E1/FE1 stand-alone Access Unit for various LAN, Data, or hosts over E1 network services. The ERM01 accommodates an optional second hot swappable shared power supply module which may derive power from AC (90-250) or DC (-48V) power sources. On the rear panel, combinations of BNC, RJ-45 and wire-wrap terminals are utilized for E1 Line interface connections. Adapter cables are used to convert the HDB26F DCE data ports to V.35, RS-530, RS-449, X.21 or 10/100 Base Ethernet depending on the installed card.
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Single Modular Port E1 CSU/DSU
ETU011 Single Modular Port E1 CSU/DSU
The ETU011 stand-alone DSU/CSU is a digital access unit for Unframed E1, Fractional E1, or Fractional cascaded E1 service. The ETU01 data channel supports user-selectable transmission rates via randomly selected E1 timeslots, which provides integral multiples of 64kbps, up to a maximum 2.048Mbps (unframed), for a line attenuation of up to 43 dB on twisted pair or coax cable. This provides an approximate operating range up to 2km (using 22AWG). The ETU01 packs the data channels into the E1 link in user-selected time slots. The unused time slots can insert IDLE code (in frame mode).
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Single Modular Port E1 CSU/DSU w/ LCD and SNMP
ETU01A Single Modular Port E1 CSU/DSU w/ LCD and SNMP
The ETU01A single port stand-alone DSU/CSU provides our best digital access solution for E1 and Fractional E1 network services termination. A DTE device may be linked to an ETU01A at data rates of 56Kbps to 2048Kbps. The ETU01A features user replaceable dataport modules for a number of interface standards; including Ethernet bridge, router, V.35, X.21, RS-530, RS-449, G.703 64Kbps Co-directional and RS-232. The ETU01A supports local control and diagnostics via LCD display, keypad and LED status indicators located on the front panel as well as via a menu driven RS-232 console port in conjunction with a standard terminal. These features enable users to easily configure the unit, execute the in-service diagnostics and monitor the network status. The ETU01A provides optional SNMP (Simple Network Management Protocol), which allows the user to remotely control, diagnose and monitor the system using industry standard SNMP protocol, our proprietary MIB-II, and any network management software.
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Single Modular Port Unframed E1 CSU/DSU
ETU01-U Single Modular Port Unframed E1 CSU/DSU
The ETU01U stand-alone DSU/CSU is a digital access unit for Unframed E1 service termination. The ETU01U data channel supports 2.048Mbps, for a line attenuation of up to 43 dB on twisted pair or coax cable. This provides an approximate operating range up to 2km (using 22AWG).The ETU01U front panel sports status LEDs for monitoring both the CSU and DSU condition and push button switches for initiating local and remote loopback with integral BERT. The ETU01U features user replaceable data port modules for a number of interface standards; including Ethernet bridge, router, V.35, X.21, RS-530, and RS-449. The ETU01U fully meets El specifications including ITU-T G.703, G.706, G.732, and G.823.
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ETU/TTU Interface Modules
ETU/TTU Interface Modules
When purchasing one of our single or multi-port access units or multiplexers that support user replaceable interface modules, our ETU/TTU interface modules provide easily selectable electrical interfaces for a wide selection of user applications. In addition to standard datacom interfaces such as V.35, RS-530, X.21, RS-449, etc. Ethernet modules are also available for bridging or routing of Ethernet over E1 or T1 network services. The family of interfaces are summarised below:
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10/100 Base-TX Ethernet Router
ETU/TTU-ET100R 10/100 Base-TX Ethernet Router
The ETU/TTU-ET100R 10/100 Base-TX Ethernet Router is used when the E1/T1 standalone access units are installed with an ET100R Interface, the unit is not only an access unit for E1 or T1 but also becomes a high performance WAN Router for 10/100BASE-T Ethernet extension. The ET100R Ethernet Router interface module for our ETU/TTU Series DSU/CSU Access Units may be accessed via the RS-232 asynchronous communication port, a serial crossover cable (provided) and text based terminal emulation software (Hyper Terminal TM). Once an IP address has been established for the subnet, the ET100R may also be accessed via Telnet. The serial port and Telnet configuration menus are identical and may include password protection.
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10/100 Base-TX Ethernet Bridge
ETU/TTU-ET100 10/100 Base-TX Ethernet Bridge
The ETU/TTU-ET100 10/100 Base-TX Network Bridge is a high performance remote, self-learning, Ethernet bridge. Its compact size and low cost makes it ideal for cost-sensitive bridging applications, or as a LAN extender or segmenter over bit stream type infrastructures. ET100 Provides an Ethernet (IEEE802.3u) Bridge function over the WAN when matched to another ET100 module, ET100 standalone, or a compatible bridge utilizing standard HDLC (ISO 13239) protocol. The interface connection is a shielded RJ-45 connector for 10/100Base Ethernet and auto-MDIX. Operates at any n56/n64 fractional or unframed E1 speed.
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2U 20-slot E1/T1 Cross Rate Converter Rack
ETRM01 2U 20-slot E1/T1 Cross Rate Converter Rack
The ETRM01 is a 2U 19 (23)" concentrator rack for E1 and T1 Cross Rate Converters in central office installations. There are 20 slots available for hot swappable FTEC cards. An optional SNMP card can be installed into the first slot for configuration and management, leaving 19 slots available for FTEC cards. The SNMP card provides both local control via an RS-232 serial console port and remote IP management using Telnet, web GUI, SNMP protocol. Each E1 card may be linked to a remote E1/T1 PABX or a stand-alone FTEC Unit. The ETRM01 accommodates an optional second hot swappable shared power supply module which may derive power from AC (100-240) or DC (-48V) power sources. On the front panel of FTEC, combinations of BNC and RJ-45 connectors are utilized for E1 and T1 Line interface connections.
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E1/T1 Cross Rate Converter
E1/T1 Cross Rate Converter
The FRM220-FTEC is a slide-in card E1/T1 converter and timeslot cross connect which enables conversion between one T1 signal and one E1 signal. T1 and E1 signals with frames employ u-Law and A-Law compander encoding principles respectively and encode those analog signals into 64kbits digital data. The E1 interface supports CCS (PCM31) or CAS (PCM30) frames with or without CRC-4 and with HDB3 line coding. The T1 interface supports D4 or ESF frame formats with B8ZS or AMI line code. Multiple clock source selection provides maximum flexibility in connecting both T1 and E1. The clock source may be from the T1 recovery clock, from the E1 recovery clock, from the internal oscillator, from an external clock or via transparent timing. All setup controls can be performed via internal DIP switch settings or via the RS-232 console port and ASCII terminal. Tests and diagnostics can easily be performed from the front panel push button switches. Diagnostics include T1 local/remote and E1 local/remote loop back.
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Ethernet over unframed E1
EOE1 Ethernet over unframed E1
The EOE1 is a Channel Service Unit for unframed ITU-T G.703 E1 that features a built-in Ethernet bridge. The CSU has a built-in Network Terminating Unit (NTU) and may connect to either 75 Ohm unbalanced, BNC connectors or to 120 Ohm balanced, unframed E1 via twisted pairs and a shielded RJ-45 connector. The Eoe1 Ethernet Bridge uses HDLC encapsulation to transport Ethernet packets across the WAN and supports 10/100 auto-negotiation or manual settings for 10M, 100M, Full or Half Duplex Ethernet. The Ethernet port also supports a standard auto-MDIX feature that will completely eliminate Ethernet cross-over cables or the guessing that is sometimes involved in choosing a cable when connecting to a HUB or a PC. The Eoe1 is very easy to configure by DIP switch setting.
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Interface Converters
