VoIP Circuit

Rack-Dense Wire-Speed Performance
The PowerConnect 3500 series is a family of four 24- and 48-port Fast Ethernet Layer 2 switches. These Layer 2 switches deliver resilient stacking, advanced security, enterprise-class management features and Power-over-Ethernet (PoE, 3524P and 3548P only). These Dell-designed switches deliver impressive switching capacities of up to 12.8 Gbps (3524 and 3524P) and 17.6 Gbps (3548 and 3548P). The 3500 series can be deployed in a wide number of different network deployment scenarios, including Fast Ethernet edge client connectivity and wiring closet deployments. Because these switches adhere stringently to industry standards, they can be deployed with other industry-standard compliant networking devices, from security appliances to routers and even to other switches. Each rack-mountable switch is 1U high and delivers a high-performance rack-dense switching solution.

Easy, Powerful Management
PowerConnect 3500 series switches support a number of industry-standard management interfaces such as web-based management, Command Line Interface (CLI), LLDP, LLDP-MED, and Simple Network Management Protocol (SNMP v1/v2c/v3). For large network environments, Dells OpenManage Network Manager provides management control to help configure large numbers of deployed switches more easily. This powerful application is included at no additional charge with our managed switches and provides one-to-many configuration changes, trap/event monitoring, network discovery, topological mapping and many other features to assist you in managing your network.

Robust Security
Advanced security features of PowerConnect 3500 series switches help protect the network from accidental or malicious interference. The switches IP and MAC-based Access Control Lists (ACLs) are designed to prevent unauthorized MAC addresses from accessing the network. SNMPv3, SSL, and SSH encryption offer the added security of encrypting switch management traffic. RADIUS and TACACS+ support enables centralized, remote authentication of administrative access to the switch. Management access filtering provides a mechanism to limit network hosts that have access to the switches using a wide array of options, such as MAC address, IP address, and VLAN. Edge authentication using IEEE 802.1x provides a meaningful security solution which is centralized and easier to manage than standard ACLs. Now, users can be added to a RADIUS database and allowed access to the network. Those who do not have proper credentials will not have access to the network. The 3500 series also supports DHCP snooping for DCHP protection.

Advanced Switching Features
The PowerConnect 3524 and 3548 switches support a variety of standards-based advanced switching features, allowing a network administrator to optimize traffic flow in the network. Up to 256 VLANs are supported, helping to enable limitation of broadcast domains as well as improved network security. Network traffic prioritization is a key requirement for deploying emerging applications like videoconferencing and Voice-over-IP. These switches support the industry-standard IEEE 802.1p protocol and prioritize traffic based upon Layer 2 and Layer 3 information. Other advanced features include port mirroring, dynamic link aggregation (LACP), SNTP, IP multicast support, and dedicated voice VLAN support for voice-centric environments. These capabilities help increase deployment flexibility, better enable VoIP deployments, and help protect networking infrastructure investments.

Power-Over-Ethernet
The PowerConnect 3524P and 3548P offer Power-over-Ethernet capabilities to power network-attached devices, such as wireless LAN access points, VoIP handsets, video cameras, and badge readers that are compliant with the IEEE 802.3af standard. With a tremendous 470W of power available to the switch for switching and PoE operations, both switches can provide up to 15.4W of power per port simultaneously (3548P requires EPS-470 for full 15.4W per port for all ports). An extended power supply, the EPS-470, can be connected to the switch to provide two basic but important functions. Whenever the switch power system is functioning properly, the EPS-470 will load share the power so that the full 15.4W of power per port can be provided to all ports. It also serves as a redundant power supply in the unlikely event that the main power supply should fail. With this new industry-standard PoE capability, Dells PowerConnect switches can connect you to the ower.

High Availability
The PowerConnect 3500 series offers several high availability features to meet enterprise networking needs. The switches can be resiliently stacked together to provide a highly available solution that can help the network survive a switch failure within the stack. The stack of switches consists of a master and backup switch that are continuously synched together so that a failure of the master unit or any other switch will not adversely affect the performance or connectivity of the other stacked switches. Multiple Spanning Tree Protocol and Rapid Spanning Tree Protocol support help reduce network setup time and improve network availability. These industry standard protocols help provide rapid reconvergence in the event of network outages even across large networks with many VLANs.