Blocks Resent

0

Max Outstanding

0

Max Block Size

0

Retrains Requested

 

 

 

 

0

 

 

Link Duration

0

Retrains Granted

0

FRN Requested

0

FRN Granted

0

FCS Errors

 

0

Round Trip Delay

0

Xmitter Underrun 0

Receiver Overrun

0

Last Speed/Protocol 33600

 

Disconnect Reason

Local hang up

 

 

 

 

 

 

Data Type

 

Description

 

 

Chars

 

Data received from or sent to DTE (PC).

 

 

 

(Formatted as 7,E,1 or 7,O,1 or 8,N,1 etc.)

 

Octets

 

Data received from or sent to remote modem in

 

 

error control mode. (Compressed if data

 

 

 

compression was enabled.)

 

Block

 

Framed Octets. (Delimited by the unique bit

 

 

 

pattern "01111110" known as a flag.)

 

 

 

 

Output

 

Output Value Description

 

Parameter

 

 

 

 

 

Chars Sent

 

Number of characters DTE has sent to modem

Chars Received

 

Number of characters modem has sent to DTE

Octets Sent

 

Number of data bytes sent to remote modem

Octets Received

 

Number of data bytes received from remote

 

 

 

modem

 

 

 

Blocks Sent

 

Number of data blocks sent to remote modem

Blocks Received

 

Number of data blocks received from remote

 

 

modem

 

 

 

92 AT Command Set Summaries

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ZyXEL Communications U-336SA user manual Data Type Description, Output Output Value Description Parameter

U-336S, U-336SA specifications

ZyXEL Communications, a leading global provider of networking and cybersecurity solutions, has offered a range of products designed to cater to various connectivity needs. Among these, the U-336SA and U-336S modems stand out for their reliability and performance, particularly in the dial-up category during the heyday of internet access.

The U-336SA and U-336S modems are external devices that revolutionized the way users connected to the internet in the late 1990s and early 2000s. Designed for both home users and small businesses, these modems supported 33.6 Kbps data transfer rates, which, at the time, were considered cutting-edge. This capability allowed for reasonably swift internet browsing, email communication, and file downloads compared to earlier modems.

One notable feature of both the U-336SA and U-336S models is their plug-and-play functionality. This ease of use made them accessible to even the less tech-savvy users, allowing quick and straightforward installation. Users could connect the modems to their PCs or laptops via a standard serial interface, minimizing setup time and complexity.

Additionally, both modems were equipped with error correction and data compression technologies. The V.42 and V.42bis protocols enhanced data integrity during transmission, ensuring that users experienced fewer disruptions and greater reliability in their connecting experience. This was particularly vital for tasks like file transfers and large downloads, where data integrity was paramount.

The modems also featured compatibility with various operating systems, including early versions of Windows, which expanded their appeal to a broader audience. The U-336SA was specifically engineered as a standalone device, while the U-336S could often be used with existing computer systems, showcasing versatility in various deployment scenarios.

In terms of design, both modems were compact and lightweight, allowing for easy portability. This made them suitable for users who required connectivity on the go or in different locations.

Ultimately, the ZyXEL U-336SA and U-336S modems represent a significant technological achievement in the history of internet connectivity. Their introduction set the stage for subsequent advancements in modem technology and played a crucial role in the evolution towards broadband and high-speed internet access that we enjoy today. Their legacy endures in the foundational technologies and protocols that continue to drive modern telecommunications.