ZyXEL Communications 3356P Dialing and Answering Techniques, Dialing using the ATD Command

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The next window sets the COM port settings. The settings used for the Comet should be as follows:

Bits per second:

115200

Data bits:

8

Parity:

None

Stop bits:

1

Flow Control:

Hardware

Click “ OK” when finished. After you have done this, save your new connection by selecting “ Save” from the “ File” menu and click “ OK.” A new connection icon will be added to your Hyper Terminal folder.

You are now ready to start entering AT commands.

In the terminal window, type:

AT<Enter>

Comet responds

OK

This confirms that the modem and your computer are communicating correctly.

To test the telephone line connection issue the manual answer command.

Type:

ATA<Enter>

The Comet will pick up the phone line, and try to communicate. Normally, this command is only used to answer an incoming call made from another modem. Thus the high pitched noise you will hear from the speaker. To abort the operation, press any key, or select “ Disconnect” from the “ Call” menu.

Dialing and Answering Techniques

Depending on what communications software you use to make modem connections, you may not have as much control of how the modem dials the telephone number. This section shows some useful examples of the AT commands used for dialing and answering operations. The command characters specific to each function are shown in bold type.

Dialing using the ATD Command

Touch Tone Dialing:

ATDT 555 1212

Pulse Dialing:

ATDP 555 1212

Tone and Pulse Dialing:

ATDP 555 1212 WT 24

6 Basic Modem Operation

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Contents Comet 3356P User’ s Manual Limited Warranty AcknowledgmentsFCC Part 15 Information FCC Requirements Contacting ZyXEL∙ E-mail Table of Contents Status Registers & Result Codes Introduction Unpacking Your ModemHardware Overview Required EquipmentIntroduction Installation WindowsWindows 3.1 & Windows for Workgroups Windows NT Understanding AT Commands Using the Windows 95 Hyper Terminal ProgramBasic Modem Operation Dialing using the ATD Command Dialing and Answering TechniquesQuick Tips when issuing AT Commands Making Your First ConnectionAuto-Answer and Hook Controls Command Description Non-Volatile Memory Modem Result CodesViewing S Register Values Changing S Register ValuesSaving Settings and User Profiles Default Modem Settings for PC’ sDialing Stored Phone Numbers Command Use both V.42bis and MNP 5 data compression Basic Modem Operation AT Command Set Summaries Basic AT Command SetSpeaker always on Extended AT& Command Set Extended AT\ Command Set Extended AT% Command SetExtended AT- Command Set AT Command Set Summaries Dec Function & Description Default Status Registers & Result CodesRegister Dec Function & Description Default Result Code Options Table Extended Result Code Options Table Connect Connect 300 EC MNP4

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.
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