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	Ultra T1 or E1 Analyzer The Ultra T1 or E1 Analysis Cards (PCI) plug into any PC and convert it into a complete T1 and E1 test platform. The Ultra Cards are available with either a single or a dual interface. A wide ranging set of software applications are available to meet your particular testing needs.
	Portable USB T1/E1 Analyzer GL's new USB based T1 E1 Analyzer is the world's most powerful, full featured, and complete BERT, voiceband, data, signaling, and protocol analyzer on the market. It can perform analysis and emulation of various signal types including voice, digits, and tones; various protocols including HDLC, ISDN, SS7, CAS, Frame Relay, GSM, GPRS, CDMA, and UMTS. It is capable of T1 or E1 PCM signal visualization, capture, storage, analysis, and emulation. In addition, convenient features are available like portability, USB friendly interface to a PC, remotability, and scripting.
	T1 E1 J1 Intrusive/Monitor Switch The T1 E1 J1 Switch provides non-intrusive failsafe monitoring and intrusive test and diagnostic capability for up to 8 full duplex T1, E1, and J1 lines. The unit provides two RJ-48c connectors for a thru connection for equipment and line connections and a Rj-48c monitor connector for monitoring both directions of a full duplex high speed line. The switch can be remotely controlled via a USB connection. GUI and scripted control software is available for placing the switch in various modes for monitoring and diagnostic purposes.
	T1/E1 Multiport Repeaters The T1 (or E1) Multiport Repeaters generate multiple identical T1 (or E1) outputs for each T1 (or E1) input. The repeaters are ideal for multicast (broadcast) applications and in lab environments for load testing and signal duplication purposes.
	Hand Portable Test Instruments GL provides a range of compact, hand held T1, E1, T3, and E3 testers, which can test a wide variety of communications facilities and equipment including Asynchronous, Synchronous, Modems, Multiplexers, CSU/DSUs, and more. With GL's LinkSim™, users can simulate a variety of communications links, inserting delays, and errors to determine what effects these impairments will have on network.