QoS

To support IEEE 802.1D/Q, the 4600 Series IP Telephones can be administered either of two ways:

●from the network by appropriate administration of the DHCP or TFTP/HTTP servers, or

●at the telephone itself using dialpad input.

Specific implementation details for local administration are in the Installation Guide. This chapter covers remote administration in 4600 Series IP Telephone Scripts and Application Files on page 67. In summary, five IEEE 802.ID/Q QoS parameters in the telephones can be administered. These parameters are:

●L2Q: setting the 802.1Q framing parameter (1=ON, 2=OFF, or 0=AUTO. The default is 0.) You can manually set a specific 4600 IP Telephone’s L2Q value to any value other than AUTO, for example to ON or OFF. However, the telephone uses that manual value rather than any value administered via the DHCP or TFTP/HTTP settings file. To use the QoS Local Administrative Option to set L2Q manually see the 4600 Series IP Telephone Installation Guide.

●L2QVLAN: setting the VLAN ID on which the telephone should operate. For example, what VLAN ID to use for DHCP Discovery, etc. (up to 4 digits, from 0 to 4094, default is 0).

●VLANTEST: setting the number of seconds to wait for a DHCPOFFER when using a non--zero VLAN ID (up to 3 digits, from 0 to 999, default is 60).

●L2QAUD: setting the 802.1Q audio priority value (between 0 and 7, default is 6)

●L2QSIG: setting the 802.1Q signaling priority value (between 0 and 7, default is 6)

In the 4600 Series IP Telephone Installation Guide, the Local Administrative Option for specifying ADDResses also allows you to specify VLAN IDs and VLANTEST values. See also VLAN Considerations on page 79. The Local Administrative Option to specify QoS values allows you to specify values for L2Q, L2QAUD, and L2QSIG.

The 4600 Series IP Telephones can simultaneously support receipt of packets using, or not using, 802.1Q parameters.

DIFFSERV

IETF RFCs 2474 and 2475 define “services” basically as different ways to treat a network’s different traffic subsets at the Internet Protocol (IP) layer, Layer 3. For example, some packets might be routed to expedite delivery and minimize delay, with other packets routed to minimize loss or cost. Redefining an octet in the Layer 3 headers for IP versions 4, or IPv4 and 6, or IPv6 provides the differentiation between these services (Differentiated Services). IPv4 calls this octet a Type of Service (TOS) octet while IPv6 calls this octet a Traffic Class. In both cases, the octet is interpreted differently than it was originally defined. With Differentiated Services, bits 0 through 5 of the octet identify a Differentiated Services Code Point (DSCP). The DSCP identifies a procedure to be used to handle that packet on a per-hop basis. Bits 6 and 7 of the octet are currently unused, and DSCP-compliant routers ignore them.

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4600 specifications

The Avaya 4600 series is a line of IP telephones designed for enterprise communication. Known for its robust features and reliability, the 4600 series has been widely adopted in various business environments, from small companies to large corporations.

One of the standout features of the Avaya 4600 series is its support for Voice over Internet Protocol (VoIP). This enables businesses to make voice calls over the internet, which can significantly reduce telecommunications costs. The integration of VoIP technology also allows for seamless communication across different locations, making it ideal for businesses with multiple branches or remote employees.

The design of the Avaya 4600 series phones is user-friendly, featuring a clear display and an intuitive interface. Users can easily navigate through various options, making calls, accessing voicemail, and managing contacts a straightforward task. Many models in the series include customizable soft keys, which allow individuals to tailor the phone's functions to their specific needs. This flexibility is crucial in environments where employees need to quickly adjust their communications settings.

Another key characteristic is the high-quality audio. The Avaya 4600 series incorporates advanced audio technologies that ensure clear and crisp sound quality during calls. This is essential for effective communication, particularly in large meetings or conference calls where clarity is vital.

The Avaya 4600 series also supports various network protocols, including Session Initiation Protocol (SIP), providing compatibility with a wide range of network infrastructures and allowing organizations to choose the system that best fits their needs. This versatility makes the 4600 series an appealing choice for businesses looking to future-proof their communication systems.

Security is a major consideration in any enterprise communication solution, and Avaya has incorporated features in the 4600 series to protect against unauthorized access and cyber threats. Encryption protocols help safeguard call data, ensuring that sensitive business information remains secure.

In terms of deployment, the Avaya 4600 series can be easily integrated into existing networks, as well as managed remotely, which simplifies the installation and maintenance process. This feature is particularly beneficial for large enterprises that require scalability across multiple locations.

Overall, the Avaya 4600 series combines advanced technology, user-friendly design, and comprehensive security measures to provide a reliable and effective communication solution for businesses. As enterprises continue to adapt to a rapidly changing communication landscape, the Avaya 4600 series remains a strong contender for organizations seeking to enhance their telecommunications infrastructure.
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