Appendix D. S-Register List

S72

DATA BITS

Selects the number of asynchronous data bits.

 

 

0

= 8 bits

 

 

1

= 7 bits

S73

DTE PARITY

Selects the number of asynchronous parity bits.

 

 

0

= None

 

 

1

= Odd

 

 

2

= Even

S74

DTE STOP

Selects the number of asynchronous stop bits.

 

 

0

= 1 stop bit

 

 

1

= 1.5 stop bits

 

 

2

= 2 stops bits

S75

DTE FLOW

Selects asynchronous flow control.

 

 

0

= None

 

 

1

= Hardware flow XON/OFF from DCE controls DTE

 

 

2

= XON/OFF from DTE controls DCE

 

 

3

= Hardware flow. RTS and CTS flow control.

12= Software flow. XON/OFF controls DTE and DCE.

S76

DTE CLOCK

Selects DTE connector transmit clock timing source.

 

 

0

= Internal (ISU 128 supplies timing)

 

 

1

= External (DTE supplies timing)

The following are the string locations for stored numbers 0 - 9.

SS80

SN0 LOC

Stored number 0 string

SS81

SN1 LOC

Stored number 1 string

SS82

SN2 LOC

Stored number 2 string

SS83

SN3 LOC

Stored number 3 string

SS84

SN4 LOC

Stored number 4 string

SS85

SN5 LOC

Stored number 5 string

SS86

SN6 LOC

Stored number 6 string

SS87

SN7 LOC

Stored number 7 string

SS88

SN8 LOC

Stored number 8 string

SS89

SN9 LOC

Stored number 9 string

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ISU 128 User Manual

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ADTRAN ISU 128 Data Bits, DTE Parity, DTE Stop, DTE Flow, DTE Clock, SN0 LOC, SN1 LOC, SN2 LOC, SN3 LOC, SN4 LOC, SN5 LOC

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.