Telecommunications

The telecommunications industry faces new challenges as the circuit-based network meets the packet-based network.

The goal is to utilize the existing infrastructure for the converged network to meet the demand for new services that combine voice (including cellular) video and data communications.

Spectracom offers reliable solutions for network service operators and telecom equipment manufacturers to meet the challenges of the new network to support the legacy infrastructure along with new services and new technologies.

Timing is everything. Synchronization in the public switched telephone network (PSTN) is maintained by the Building Integrated Timing Supply (BITS). However, new services utilizing new technologies can be largely affected by frequency jitter and clock aberrations at the network edge.

Transport multiplexing schemes such as SONET, SDH, and HDSL has largely met the bandwidth needs of the consumer. However pointer adjustments in these digital systems can greatly effect the reliable operation of remote network elements such as remote switches, GR-303 DLCs, mobile telephone switching stations (MTSO), base stations, enterprise PBXs/routers, and other such aggregation devices to the PSTN.

Spectracom offers solutions for synchronizing, retiming and filtering remote network elements. If the precision of a GPS primary reference source (PRS) is needed, we provide stratum-1 synchronization and T1 or E1 timing to telecommunication network elements for service providers and enterprises. Alternatively, our new Timing Enhancement Kits (TEK™) offer the lowest cost alternative for reconstituting timing stability at the network edge without the need for a PRS.

Applications Include:

GSM base stations
Data communications
Cable TV and cable modem
TDM over IP
GPS synchronization

For Equipment Manufacturers

Leading telecommunication equipment manufacturers also rely on Spectracom’s frequency control and timing products to improve their devices and systems. Our products can integrate directly into devices and systems for improved performance or are used and for qualification testing and calibration in manufacturing. Our filters, retimers, references, and distribution systems are available along with clock synthesizers, converters and extractors. We can also customize or semi-customize these products to meet your specific telecommunication network needs.

Products for telecommunications

Retimers and Filters

Our new Timing Enhancement Kits (TEK™) offer the lowest cost alternative for simply reconstituting timing stability at the network edge. TEK retimer / filters provide a simple solution for mitigating the effects of clock aberrations and SONET pointer adjustments. Features: Compact, stand-alone unit, DS1 and E1 versions, retiming buffer option to accept timing reference Benefits: Improved QoS, fewer dropped calls, eliminate clock alarms, mitigates slips, enables bonding of circuits, easy-to-install

	Primary Frequency References
	Master Oscillators are highly accurate primary reference sources (PRS) locked to GPS. Use for T1/E1 syncronization for enterprise or independent networks to provide slip-free operation. Timing outputs are DS1 or CEPT framed all 1's, or RS-485 at selectable frequencies. Features: GPS synchronization, Stratum-1 Benefits: high accuracy, reliability, versatile

Time and Frequency Distribution

Distribution of timing from one source to many network elements is a Spectracom specialty. Applications include: communications center timing distribution from an incoming T1 to MUXs and PBX, SONET timing distribution from an add-drop MUX into customer premises separately from the traffic lines, redundant clock selection, timing source with stratum-3 accuracy to distributes optional built-in master clock to 12 network elements. Features: Economical clock distribution, failover detection Benefits: Redundancy, easy system integration

	Telecom Clock Converter
	VersaTap™ is a unique device that converts or synthesizes a clock from a frequency signal. Features: 10 MHz input to (x2)DS1 or (x2)E1 outputs Benefits: Versatility, leverages frequency reference to telecom testing

	Synchronization Supply Unit (SSU)
	The Epsilon™ Synchronization Supply Unit (SSU) is a fully modular and flexible SSU that can be customized to provide the most cost-effective solution to all network synchronization requirements, from Primary Reference Clock to Central/Transit/Local nodes. Features: Meets ITU G.811/G.812 and ETSI specs Benefits: Cost-optimized solution, flexible, fully manageable

	Network Time Servers
	NetClock/GPS systems provide reliable and secure time synchronization across the IP-network. Ouputs include NTP via Ethernet, serial time codes, 1PPS, IRIG and 10 MHz. Features: GPS synchronization for IP networks and devices through NTP, 1PPS & 10MHz options Benefits: Secure, accurate, easy-to-manage