DDS Test, SPID1 LOC, SPID2 LOC, LDN1 LOC, LDN2 LOC

			Appendix D. S-Register List

S57	DDS TEST	Allows an ISU 128 optioned as a leased line unit to
		respond to DDS in-band latching loopback or V.54
		loopback commands.
		0	= No checking
		1	= Check for DDS latching loopbacks
		2	= Check for v.54 loopbacks
		3	= Check for V.54 and DDS latching loopbacks
S58	CALL SCREENING Allows the ISU 128 to screen incoming calls.
		0	= Answer any call
		1	= Answer only calls from numbers matching
			those stored in SN0 through SN9.
S59	CHANNEL RATE Sets the available network bandwidth when the ISU
		128 is in leased mode.
		3	= 64 kbps
		5	= 128 kbps

SS60	SPID1 LOC	Primary SPID location.
SS61	SPID2 LOC	Secondary SPID string location.
SS62	LDN1 LOC	Primary local directory number string location.
SS63	LDN2 LOC	Secondary local directory number string location.
S70	DTE MODE	Selects asynchronous or synchronous mode on the DTE
		connector.
		0	= Asynchronous
		1	= Synchronous
S71	DTE RATE	Selects the DTE connector bit rate.
		1	=	300
		3	=	1200
		6	=	2400
		8	=	4800
		11=		9600
		15=		19200
		17=		38400
		18=		48000
		19=		56000
		20=		57600
		21=		64000
		22=		112020
		23=		115200
		24=		128000

61202.029L2-1

ISU 128 User Manual

113

ISU 128 specifications

The ADTRAN ISU 128 is a versatile and robust integrated service unit designed for network access solutions, particularly within telecommunications and enterprise environments. This unit plays a critical role in enabling high-speed data transmission, supporting various voice, video, and data services over traditional and next-generation networks.

One of the noteworthy features of the ADTRAN ISU 128 is its ability to aggregate multiple digital circuits into a single access point. It supports T1, E1, and fractional T1/E1 interfaces, making it a flexible choice for customers with different bandwidth needs. The unit allows for seamless migration from legacy systems to modern broadband services, ensuring that businesses can scale their operations without significant infrastructure changes.

The ADTRAN ISU 128 also excels in its support for various protocols, including Frame Relay and ATM, providing the necessary flexibility to adapt to different network architectures. This adaptability is essential for businesses that rely on diverse communication platforms to maintain connectivity and operational efficiency.

Another significant aspect of the ISU 128 is its built-in features for diagnostics and monitoring. The unit includes comprehensive loopback and performance monitoring capabilities, which enable network administrators to troubleshoot potential issues proactively. This functionality ensures a reliable connection and minimizes downtime, which is critical for maintaining service-level agreements (SLAs).

In terms of user interface, the ADTRAN ISU 128 is designed with ease of use in mind. The unit can be configured and managed through a web-based graphical user interface, allowing for straightforward remote access to settings and performance metrics. This capability facilitates quick adjustments and upgrades, helping to streamline network management tasks.

The ISU 128 is also built with a strong emphasis on reliability and durability. It is housed in a compact, rack-mountable design, making it suitable for various deployment environments. These characteristics, combined with support for redundant power supplies, enhance the unit's reliability in critical operations.

Overall, the ADTRAN ISU 128 stands out as a powerful solution for organizations seeking to optimize their network access. With its advanced features, compatibility with multiple technologies, and emphasis on reliability, the ISU 128 is an ideal choice for those looking to enhance their communication infrastructure in a rapidly evolving digital landscape.

ADTRAN ISU 128 user manual DDS Test, SPID1 LOC, SPID2 LOC, LDN1 LOC, LDN2 LOC, DTE Mode, DTE Rate

Models: ISU 128

DDS TEST

S58

S59

SPID1 LOC

SPID2 LOC

LDN1 LOC

LDN2 LOC

DTE MODE

DTE RATE

ISU 128 specifications