KILOMUX-2100 Manual Data, Voice, Fax and LAN Integrating Modular Multiplexer

General Information

Kilomux is an advanced, highly versatile user-configurable modular TDM (Time Division Multiplex) system. Kilomux provides an efficient and cost-effective method for transmitting data, voice and fax over digital data services. Access to these services is provided over a variety of standard interfaces (V.35, RS-530/V.36, RS-232/V.24, X.21, Standard DDS, co-directional G.703, ISDN, fiber-optic, T1, E1 and IP), at data rates ranging from 9.6 to 1536 kbps. Bandwidth utilization
efficiency is 98.5%. Main System Features The Kilomux system can be equipped with various types of input/output (I/O) modules that provide the required interface for the user data, fax, and voice
channels. The range of available Kilomux modules is continuously expanding.
The series of I/O modules includes:

• High-speed synchronous data modules operating at a rate of 2.4 through 614.4 kbps – the KHS series of modules
• Low-speed data modules (300 bps to 57.6 kbps or 64 kbps) synchronous and asynchronous data channels, including statistical multiplexing modules – the KLS series of modules
• ISDN interface modules – the KHS.U series and KVF.4/S0 series
• 2-wire and 4-wire multiple voice channel interface modules that can directly connect to PBX lines and 2-wire telephone sets – the KVC series of modules
• 2-wire and 4-wire interface voice/fax low bit rate KVF.4 and KVF.8 modules
• T1 and E1 PBX trunk interface KVF.5 and KVF.6 modules
• Token ring extender module, KTRE
• Ethernet Bridge/Router module, KMBE
• Bypass and multidrop module, KDI – for Kilomux-2100 only Detailed information on the specific Kilomux modules can be found in the separate module Installation and Operation Manuals.

The Kilomux-2104 system is equipped with only one main link. The Kilomux-2100 system can be equipped with two main link modules. The two main link modules, found only in the Kilomux-2100 system, can be used in several ways:
• To provide hot-standby redundancy (backup) for the main link, with automatic or manual switchover in case one of the links fails. For maximum flexibility, Kilomux-2100 allows the preparation of a different configuration for use on the backup link. The backup link can also use a switched data circuit. The switched circuit can be established on a PSTN line, using analog modems, or on an ISDN
line using an S or U interface.
• To provide two independent links from the same Kilomux-2100 enclosure. The two links can operate at different data rates. The dual-link mode can also be used for providing the equivalent of hot standby protection to critical data channels (by enabling the priority bumping feature).
• To provide multidrop and bypass capabilities (using a dedicated KDI module). In addition to main link redundancy, the Kilomux-2100 system reliability can be further enhanced by installing an additional power supply unit in the enclosure. The power supplies share the load current; therefore when one of them fails or its input voltage is disconnected, the other takes over the full load without
disturbance to Kilomux-2100 operation.
The Kilomux system provides flexible system timing options, with several main link, and channel timing modes. The main link timing modes are DTE, DCE, adaptive, and external DCE. In the
DCE and external DCE modes, the timing reference source can be selected by the user:
• Internal oscillator
• External (timing locked to one of the data channels)
• The other main link module (provided a KDI module is installed)
In addition to the main timing source, a fallback source can be selected. When the timing mode is DTE or external DCE, buffers are inserted in the main link signal paths, to absorb the expected jitter and timing instabilities. Normal buffer size is ±8 bits for operation over satellite links. The receive-buffer size can be increased to ±256 bits. The timing modes available for the data channels are programmable, thereby permitting each channel to be configured as DCE (supplies receive and transmit clocks to the user equipment), DTE1 (supplies the receive clock and accepts a
transmit clock), or DTE2 (accepts receive and transmit clocks from the user equipment), with buffered retiming of the received data. Connection to the national network and to common-carrier data lines is also supported, with the external clock selectable as the source for system timing.
For modules with ISDN, T1, E1, and fiber-optic interfaces, a loopback timing mode is available. This mode enables locking the Kilomux timing to the accurate timing provided by the network to which the interface is connected.
For modules with IP interfaces, an adaptive timing mode is available. This mode enables to recover clock from the Ethernet network interface.