Returning Products for Repair

Before you send a product directly to 3Com for repair, you must first obtain a Return Material Authorization (RMA) number. Products sent to 3Com without authorization numbers will be returned to the sender unopened, at the sender’s expense.

To obtain an authorization number, call or fax:

Country

Telephone Number

Fax Number

 

 

 

Asia, Pacific Rim

+ 65 543 6500

+ 65 543 6348

Europe, South Africa,

+ 31 30 6029900

+ 31 30

and Middle East

 

6029999

Latin America

1 408 326 2927

1 408 326 3355

From the following countries, you may call the toll-free numbers; select option 2 and then option 2:

Country

Telephone Number

Fax Number

 

 

 

Austria

0800 297468

 

Belgium

0800 71429

 

Denmark

800 17309

 

Finland

0800 113153

 

France

0800 917959

 

Germany

0800 1821502

 

Hungary

00800 12813

 

Ireland

1800553117

 

Israel

1800 9453794

 

Italy

1678 79489

 

Netherlands

0800 0227788

 

Norway

800 11376

 

Poland

00800 3111206

 

Portugal

0800 831416

 

South Africa

0800 995014

 

Spain

900 983125

 

Sweden

020 795482

 

Switzerland

0800 55 3072

 

U.K.

0800 966197

 

U.S.A. and Canada

1 800 876 3266

1 408 326 7120

 

 

(not toll-free)

 

 

 

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3Com 3C16722A, 3C16721A, 3C16723A manual Returning Products for Repair, Country Telephone Number Fax Number

3C16723A, 3C16721A, 3C16722A specifications

The 3Com 3C16722A, 3C16721A, and 3C16723A are part of a series of networking devices designed to enhance network performance, reliability, and management capabilities in various environments. These devices are primarily used in enterprise networks, catering to different sizes and types of network infrastructures.

The 3C16722A is a high-performance Ethernet switch featuring 24 ports that support 10/100/1000 Mbps speeds. Its main features include auto-MDI/MDI-X capabilities, which automatically detect connections and configure the ports accordingly, facilitating seamless integration. This switch supports VLAN (Virtual Local Area Network) functionality, enabling network segmentation and improved security. With robust forwarding capabilities, the 3C16722A ensures efficient data transfer within a network, making it ideal for organizations that require high bandwidth for data-intensive applications.

The 3C16721A, while similar to the 3C16722A, is designed for users who require fewer ports but still demand high-speed connectivity. Offering 16 ports, the 3C16721A also operates at 10/100/1000 Mbps and incorporates advanced features such as Quality of Service (QoS) settings. QoS prioritizes critical network traffic, ensuring that voice and video data are transmitted with minimal latency, which is essential for businesses that depend on real-time communication tools.

Lastly, the 3C16723A combines the functionalities of both its counterparts but extends the port offerings to cater to larger networks. Featuring 48 ports, this switch can support multiple devices simultaneously, providing extensive connectivity options. Additionally, it offers stacking support, allowing multiple switches to operate as a single unit. This capability enables network administrators to manage larger systems more efficiently and simplifies the overall network architecture.

Each of these devices utilizes advanced technologies such as Spanning Tree Protocol (STP) for loop prevention and link aggregation to enhance throughput by combining multiple connections. Security features, including port security and access control lists, are also integrated to protect sensitive data and maintain network integrity. Overall, the 3Com 3C16722A, 3C16721A, and 3C16723A are versatile networking solutions that deliver performance, scalability, and security for modern enterprise networks.