Chapter 6. Configuration

The setting in Figure 6-8 allows for V.25 bis messages in asynchronous (start/ stop) data format.

 

 

 

 

 

 

 

 

 

 

 

 

 

1=Dial Line

 

 

 

 

 

 

 

 

 

 

 

1=Netw. options

 

 

2=Leased Line

 

 

3=CONFIG

 

2=DTE options

 

 

 

 

 

 

 

 

 

 

3=Protocol

 

 

 

 

 

 

4=Quick setup

 

 

 

 

 

 

5=Remote config

 

 

 

 

 

 

 

 

 

 

 

1=Switch protocl

 

 

 

 

2=Call type

1=Front Panel

 

 

3=Terminal ID

 

 

2=RS-366

 

 

 

 

 

 

4=Dial options

 

 

 

 

3=AT commands

 

 

5=Auto answer

 

 

 

 

 

 

6=Answer tone

4=V.25

 

1=V.25 HDLC

5=Disabled

 

 

7=Connect Timout

2=V.25 ASYNC

 

 

 

3=V.25 BISYNC

8=Call Screening

 

 

 

 

4=V.25 HDLC FLAG

 

 

 

 

Figure 6-8

V.25 bis ASYNC Menu Tree

Although V.25 bis allows asynchronous data format, asynchronous DTE is more likely to support the AT command set than V.25 bis.

V.25 SYNC HDLC Dialing

This setting provides V.25 bis messages in bit-synchronous format (for exam- ple HDLC, SDLC, X.25). The bit-synchronous format is the most commonly used by V.25 bis.

This option specifies that the characters should be 7-bit ASCII, with the 8th bit ignored (it may be either 0 or 1).

The first byte of each packet contains all ones (A = FF HEX), and the second byte of each packet (the C byte) is either 13 HEX or 03 HEX if not the final pack- et.

V.25 SYNC BISYNC Dialing

This setting allows for V.25 bis messages in byte synchronous format (BI- SYNC). V.25 bis specifies that the characters should be ASCII, 7 bits, and odd parity. This setting allows synchronous DTE which does not use HDLC to support serial in-band dialing.

V.25 HDLC FLAG

Configuring the ISU 128 for HDLC FLAG V.25 bis enables in-band dialing over a DTE interface using standard synchronous HDLC V.25 bis commands with 0x7E hex idle.

Disabled

This selection disables in-band dialing over the DTE interface.

61202.029L2-1

ISU 128 User Manual

35

Page 49 Page 51
Page 50
Image 50
ADTRAN ISU 128 user manual Bis Async Menu Tree, Sync Hdlc Dialing, Sync Bisync Dialing, Hdlc Flag, Disabled
Page 49 Page 51

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.
Top Page Image Contents