PPP Mode, Dte Cts, Dte Rts, Dte Dsr, Dte Cd

			Appendix D. S-Register List

S27	PPP MODE	Determines type of PPP connection.
		0=	Single-link operation (default)
		1=	Multilink operation
		2=	Use compression
S30	DTE CTS	Controls the operation of the DTE connector clear to send
		(CTS) line.
		0=	Follows RTS
		1=	Force CTS
S31	DTE RTS	Controls operation of the request to send (RTS) line.
		0=	1 ms delay
		17=	18 ms delay
S32	DTE DSR	Controls the operation of the data set ready (DSR) signal on
		the DTE connectors.
		0=	Force DSR on always
		1=	DSR off OOS + Test
		2=	DSR off Link Down
S33	DTE CD	Controls the operation of the carrier detect (CD) line on the
		DTE connectors.
		0=	Force CD on always
		1=	CD is active during a call (normal operation)
		2=	Off with LOCD
S34	DTE DTR	Determines how the ISU 128 responds to changes in DTR.
		This is a bit-mapped register.
		0=	Ignore DTR.
		1=	Force AT command mode when DTR is off
		2=	Dump incoming call when DTR is off
S35	DTE CONN	Determines which is the current operating DTE connector.
		0=	RS-530 connector
		1=	V.35
		2=	EIA-232 connector

S-registers 36 through 38 require the optional V.34 modem P/N 1202029L3.

61202.029L2-1

ISU 128 User Manual

109

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 PPP Mode, Dte Cts, Dte Rts, Dte Dsr, Dte Cd, Dte Dtr, DTE Conn

Models: ISU 128

PPP MODE

DTE CTS

DTE RTS

DTE DSR

DTE CD

DTE DTR

DTE CONN

ISU 128 specifications