Chapter 7. Protocol Options

V.110

The V.110 protocol is a CCITT compliant rate adaption method which pro- vides DTE service between the ISU 128 and other V.110 compliant devices. V.110 supports synchronous and asynchronous DTE rates. See the section Recommended Operating Modes and Table 1-Bin Chapter 1 for available V.110 rates. Figure 7-2 illustrates the menu path for selecting V.110.

V.34

The V.34 protocol allows the ISU to originate and receive calls to analog mo- dems on POTS lines. The V.34 modem only supports asynchronous DTE rates. To place an outgoing call to an analog modem, the call type must be changed to Audio. See Call Type in Chapter 6 to change call types. Figure 7-3 illustrated the menu path for selecting the V.34 modem operational parameters.

The ISU 128 with optional V.34 modem (part number 1202029L3) must be used for operation of this protocol.

Error Control

This option sets the type of error control to be negotiated with the far-end mo- dem during train-up. Normal turns all error control off and makes allowances for flow control. Reliable MNP uses MNP error control. If the far end does not support MNP then the call is terminated. When Auto-Rel MNP is select- ed, the ISU 128 attempts to use MNP error control. If the far end does not use MNP then normal operation is used. Force LAPM allows only LAPM (V.42) error corrected calls to connect. Force MNP allows only MNP error corrected calls to connect.

3=CONFIG

 

 

 

 

 

 

 

1=Clear Channel

 

 

 

1=Netw. options

2=BONDING mode 1

 

 

 

 

 

 

 

 

 

 

 

 

 

2=DTE options

3=V.120

 

 

 

 

 

 

 

 

 

 

 

 

3=Protocol

 

 

 

 

 

4=V.34

 

 

1=Error Ctrl

 

 

4=Quick setup

5=V.110

2=Compression

 

 

 

 

 

 

 

 

 

 

5=Remote config

 

6=DSU 57.6 ASYNC

3=MNP Blk Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7=T-LINK

 

 

 

 

 

 

 

 

 

 

8=SAP

 

 

 

 

 

 

 

 

 

9=FALLBACK

 

 

 

 

 

 

 

 

 

 

0=PPP asyn-sync

 

 

 

1=Normal

2=Direct

3=Reliable MNP

4=Auto-Rel MNP

5=Force LAPM

6=Force MNP

Figure 7-3

V.34 Error Control Menu Tree

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ISU 128 User Manual

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ADTRAN ISU 128 user manual 110, Error Control Menu Tree

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.