4

AT Command Set Summaries

Basic AT Command Set

 

 

 

Command

Options

Function & Description

A/

 

 

Re-execute the last command string

<any

 

 

Terminate the current connection attempt when entered in handshaking

key>

 

 

state

All the following commands require an “AT” prefix

A

 

 

Go off-hook and attempt to establish a connection without waiting for a

 

 

 

ring

Bn

 

 

Line modulation options

 

 

B0

Select V.22 mode for 1200 bps connection

 

 

B1 *

Select Bell 212A for 1200 bps connection

 

 

B2

Select V.23 1200 bps for receiving, 75 bps for transmitting in originate

 

 

 

mode; 75 bps

 

 

 

for receiving and 1200 bps for transmitting in answer mode

 

 

B3

Select V.23 75 bps for receiving, 1200 bps for transmitting in originate

 

 

 

mode; 1200 bps for receiving and 75 bps for transmitting in answer mode

 

 

B15

Select V.21 for 300 bps connection

 

 

B16

Select Bell 103 for 300 bps connection

Dn

 

 

Dial command, beginning the dialing sequence. The string “n” (telephone

 

 

 

number and modifiers) listed as follows is entered after the “D”

 

 

 

command

 

 

L

Re-dial last number. Should be the first character following ATD,

 

 

 

ignored otherwise

 

 

P

Pulse dial.

 

 

R

Reverse dial. Originate call in answer mode (go on-line in answer mode)

 

 

S=n

Dial the phone number stored in NVRAM at location “n” (n=0, 1, 2, 3)

 

 

T

DTMF tone dial.

 

 

W

Wait for second dial tone. The modem waits for the second dial tone

 

 

 

before processing the dial string

 

 

,

Pause. Cause the modem to pause for a time before processing the next

 

 

 

character in the dial string (specified by S8 register)

 

 

!

Hook Flash (for call transfer). Cause the modem to go on-hook for 0.5

 

 

 

second then return to off-hook

 

 

@

Wait for 5 seconds of silence after dialing number

 

 

;

Return to command state after dialing a number without disconnecting

 

 

 

the call

En

 

 

AT command echo options

 

 

E0

Echo disabled

 

 

E1 *

Echo enabled

Hn

 

 

Switch-hook control

 

 

H0 *

Modem goes on-hook

 

 

H1

Modem goes off-hook

Mn

 

 

Speaker control

 

 

M0

Speaker always off

 

 

M1 *

Speaker on until carrier present

AT Command Set Summaries 13

Page 18 Page 20
Page 19
Image 19
ZyXEL Communications 3356P user manual AT Command Set Summaries, Basic AT Command Set
Page 18 Page 20

3356P specifications

ZyXEL Communications 3356P is an advanced networking device designed primarily for small to medium-sized businesses that require reliable connectivity and efficient performance. This versatile product combines switching and Power over Ethernet (PoE) capabilities, making it a significant addition to any network infrastructure.

One of the standout features of the ZyXEL 3356P is its PoE functionality. This device supports Power over Ethernet, allowing it to deliver electrical power along with data to connected devices such as IP cameras, VoIP phones, and wireless access points. With a total power budget of 65 Watts, the switch can adequately support multiple PoE devices simultaneously, simplifying deployment and reducing the need for additional power outlets.

The ZyXEL 3356P is equipped with 24 Gigabit Ethernet ports, ensuring high-speed data transfer and reducing network bottlenecks. The use of Gigabit technology allows for significantly improved bandwidth, which is crucial for businesses that rely heavily on data-intensive applications like video conferencing and large file transfers. Additionally, the switch operates with a non-blocking architecture, providing full duplex communication for maximum throughput.

ZyXEL's 3356P is focused on security and management, featuring advanced Layer 2 and Layer 3 switching capabilities. It supports VLAN tagging, which allows for the segmentation of network traffic and enhancements in security. This function helps maintain performance and reduces the risk of unauthorized access to sensitive information.

Traffic management is further enhanced with Quality of Service (QoS) protocols. This functionality prioritizes essential traffic, ensuring that critical applications receive the necessary bandwidth while less urgent data transfers are handled appropriately. This feature is particularly beneficial for businesses that demand seamless connectivity and consistent performance from their networks.

The device also comes with built-in network management capabilities, allowing network administrators to monitor performance and configure settings quickly. With support for both Web-based management and Simple Network Management Protocol (SNMP), the ZyXEL 3356P provides flexibility in administration, making it user-friendly for both IT professionals and less tech-savvy individuals.

Overall, ZyXEL Communications 3356P is an exceptional choice for organizations looking for a reliable, feature-rich networking solution. With its robust performance, PoE capabilities, advanced security features, and ease of management, it stands out as a reliable foundation for a scalable and efficient network.
Top Page Image Contents