ZyXEL Communications U-336SA user manual Status Registers & Result Codes

Models: U-336S U-336SA

1 161
Download 161 pages 34.07 Kb
Page 123
Image 123

Command

bit

dec

hex

Function and description

Ref.

 

 

 

 

accepted)

 

S18=

 

dec

hex

Force modem to fix baud rate

+000

 

 

 

 

when answering

 

 

 

0 *

0

Disable fixed baud function

 

 

 

1-46

1-2E

Enable baud rate to be fixed

 

 

 

 

 

when answering. Baud rate value

 

 

 

 

 

settings (n) the same as S20

 

S19=

 

dec

hex

Modem connection mode, same

+000/

 

 

 

 

 

&Nn

 

 

0-73

0-49

setting value as 'AT&Nn'

 

 

 

 

 

command

 

S20=

 

dec

hex

DTE speed (bps). Auto

+003

 

 

 

 

detected from AT Command

 

 

 

0

0

230400 bps

 

 

 

1

1

115200 bps (Default)

 

 

 

2

2

76800 bps

 

 

 

3

3

57600 bps

 

 

 

4

4

38400 bps

 

 

 

5

5

19200 bps

 

 

 

6

6

16800 bps

 

 

 

7

7

14400 bps

 

 

 

8

8

12000 bps

 

 

 

9

9

9600 bps

 

 

 

10

A

7200 bps

 

 

 

11

B

4800 bps

 

 

 

12

C

2400 bps

 

 

 

13

D

1200 bps

 

 

 

14

E

460800 bps

 

 

 

15

F

300 bps

 

 

 

16

10

307200 bps

 

Status Registers & Result Codes 109

Page 123
Image 123
ZyXEL Communications U-336SA user manual Status Registers & Result Codes

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.