Command

Options

Function & Description

Ref.

 

 

leased lines only)

 

 

&N9

V.27bis 4800 (models with 4-wire

 

 

 

leased lines only)

 

 

&N10

V.27bis 2400 (models with 4-wire

 

 

 

leased lines only)

 

 

&N11

V.26bis 2400 (models with 4-wire

 

 

 

leased lines only)

 

 

&N12

V.23 1200/75 (See also S48b3,

 

 

 

S52b7)

 

 

&N13

V.23 600/75 (See also S52b7)

 

 

&N14

V.22bis 2400/1200

 

 

&N15

V.22 1200

 

 

&N16

V.21 300

 

 

&N17

V.32bis

 

 

 

14400/12000/9600/7200/4800

 

 

&N18

V.32bis 12000/9600/7200/4800

 

 

&N19

V.32bis 7200/4800

 

 

&N24

BELL 212A 1200

 

 

&N25

BELL 103 300

 

 

&N32

G3 Fax V.17/V.29/V.27ter

 

 

 

14400/12000/9600/7200/4800/2400

 

 

 

(See also S42.4).

 

 

&N34

ZyXEL 19200

 

 

&N35

ZyXEL 16800

 

 

&N36

ZyXEL 14400

 

 

&N37

ZyXEL 12000

 

 

&N38

ZyXEL 9600

 

 

&N39

ZyXEL 7200

 

 

&N42

CELL 14400

 

 

&N43

CELL 12000

 

AT Command Set Summaries 97

Page 111
Image 111
ZyXEL Communications U-336SA user manual AT Command Set Summaries

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.