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Home / Solutions / Make Your VoIP Phone Service System Better With NETGEAR

Make Your VoIP Phone Service System Better With NETGEAR


How NETGEAR Can Make Your VoIP Phone Service System Better for your Business

The question for business telephony at any scale is no longer whether to switch to voice over IP. When the most important factor that has moved VoIP into the mainstream is improved quality of service. Businesses that have held back because of wipes early reputation for poor voice quality need no longer be concerned.

Transition to VoIP

That important transactions such as sales will be impeded by poor quality of service or that their company will make a less than fully professional impression on callers with VoIP. Today the excellent quality of service can always be achieved with VoIP but it’s not guaranteed QoS ultimately depends on the switches that control the VoIP traffic and of course the network over which that traffic travels. It’s understandable that the focus of attention and a transition to VoIP is typically on the service provider.

The delivery model on site versus hosted and the IP phones but the switches have the most impact on the user experience with Netgear switches VoIP traffic can be automatically prioritized to maintain the desired quality of service even when the network is saturated a successful VoIP network with reliable QoS has voice packet prioritization Netgear switches accomplish this automatically adequate bandwidth both network and switches resilience network switches with alternate power supply security.

The network must be protected from hacking including physical hacking regarding network planning the number of IP phones combined with the need for a fast ethernet versus gigabit connection will, in turn, determine the bandwidth and power requirements for the switches. Netgear recommends two lines of managed switches for VoIP networks the Netgear intelligent edge em 4100 series are fast ethernet and gigabit ethernet access layer switches with several gigabit ports for uplink functions the Netgear next-gen edge EMM 5300 series. Gigabit Ethernet switches with embedded 10 gigabit ports for uplink functions and virtual chassés stacking determining which switch within these two families requires answering four questions one will the IP phones require a fast Ethernet port at the switch or a Gigabit Ethernet.

voip with netgear

with netgear

Today’s high-end state-of-the-art phones often have two ports one that connects to the switch and another that connects to a co-located PC if the co-located pcs on the network require gigabit speed then, of course, a gigabit switch is required number two what is the average bandwidth required per IP phone. Number three how many IP phones will be on the network and four what is the total bandwidth required per switch virtually all IP phones are designed to accept power over ethernet there are two versions available p OE and p OE plus to determine which switch in the m 4100 or m 5300 family is required for a particular installation from a p OE perspective you should ask the following questions how many watts are required per IP phone?

cost-effective VoIP network

How many IP phones will be on the network what is the total wattage requirement this reference design will provide general guidance on how to plan a highly reliable and cost-effective VoIP network the network was designed with four criteria in mind simplicity to enable easy installation and management voice packet prioritization to ensure that a high level of QoS will always be available resilience to ensure the 24/7 coverage that’s a requirement for a business critical function like telephone service and security . This 200 phone installation would be typical for a midsize business or an enterprise scale call center at the access layer each switch connects to 40 phones and also powers them via p OE at the distribution layer.

with netgear

Virtual stacking technology is used for high-performance and highly redundant distributed link aggregation this installation consists of several IP subnets and associated VLANs but without layer 3 routing complexities QoS settings are enforced by the switches across the entire VLAN network this design delivers a highly available network that provides uninterrupted connectivity. It incorporates a level of redundancy such that there are no points of hardware failure further critical components can be swapped without interruption of service the switches can be configured with a unique easy-to-use web-based interface as well as the industry standard command-line interface.

The IP phones are auto-discovered and this network design avoids the use of the spanning tree protocol which is complex and difficult to configure the networks distribution layer allows for the best of both worlds with redundant links as well as advanced load balancing and seamless failover the switches handle packet prioritization to deliver high QoS in this design. The switches are all equipped with a redundant power supply in the unlikely event that a switch power supply should fail the design offers multiple levels of security including port based access control lists and radius.

How to configure the switches

Netgear switches support Mac authentication bypass for non-radius aware endpoints Netgear has the only solution with a fully functional interface along with an industry-standard command-line interface. Let’s discover how to configure the switches with an example of quality of service using both CLI and GUI raise the VoIP traffic priority and enable the voice VLAN feature to send VoIP Rafic with dot 1p priority of five and map priority five to q5 create a diff-serv class map policy to provide QoS for voice traffic on the phone ports.

with netgear

This policy will be copied onto all stacks in the land network supporting VoIP devices here we go into the DiffServ configuration mode we create a diff sort of class for the DiffServ policy and cue VoIP traffic on the protocol level we enter the VoIP last name with the class type parameter set to all we match protocol type with UDP and we match IP dscp with EF next we apply the diff sort of class to a policy map we enter the VoIP policy name with policy type set to n then we assign the VoIP policy Q value to five configure the phone ports with voice VLAN 100 and data VLAN 200 and apply the VoIP policy to the phone ports. Here is an example of how to come is for QoS with net gears fully functional easy to use GUI interface enable the voice VLAN feature globally choose switching VLAN advanced voice VLAN configuration enable admin mode and select all interfaces to support phones change the interface mode to VLAN ID and set the value to voice VLAN 100 click apply to commit the changes – queue and prioritize VoIP traffic properly change the 802.1 PQ mapping choose QoS cos advanced 802.1 p2q mapping.

Select all from the interface selection drop-down menu and change the Q value to 5 for 802.1 P priority 5 clicks apply a sign queue priority to the phone ports choose QoS cos advanced interface queue configuration select all phone ports change the q ID to five and change the scheduler type District click apply to enable. The dip serve feature choose qos diffserv advanced diffserv configuration enabled if serve admin mode and click apply create a diff serve for the diffserv policy and q VoIP traffic on the protocol level choose QoS diffserv advanced class configuration.

Enter the Void class name changed the class type to all and click Add when the class is created click the class to open the void class configuration page on the void class configuration page notice the various settings that can be applied to the class click protocol type and select UDP from the drop down menu click apply then click IP dscp and select EF from the drop down menu click apply next click class of service and select five from the drop down menu click apply to a policy map to create the policy map.

with netgear

Choose QoS diffserv advanced policy configuration entered the void policy name changed the policy type to in and change the member class to the void class you created click Add when the policy is created click the void policy to enter its configuration page on the VoIP policy configuration page change the assign Q value to 5 and click apply apply the policy to all phone ports choose QoS diffserv advanced service interface configuration select all phone ports and change the policy in name to the VoIP policy created click apply Netgear manage switches off secur future-proof networking infrastructure for midsize organizations and campus networks but why Netgear competitors like HP and Cisco focus on enterprise and data centers fighting against brocade Arista force 10 IBM blade and juniper.

New features of Netgear

When it comes to midsize organizations they have to repurpose and dumb down their solutions to meet the price demands while justifying them and in spite of a significantly reduced feature set they are still quite expensive and complex to deploy and maintain we at Netgear provide better value by building our offerings from the ground up and not the top down so that by adding new features we are reaching up to new companies and not worried about protecting any enterprise business reaching down to smaller markets.

We continually strive to simplify the management of our solutions in addition to a real industry standard CLI all our managed switches come with a fully functional web management interface not just a dashboard which makes us easier to use and more attractive to SMB and distributed branch enterprise companies last but not least we systematically lower the overall acquisition and lifecycle costs with things like 10 gigabits built in uplinks and industry-leading lifetime warranties and technical support.


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