DHCP Server Administration

-Option 42 - SNTP Server.

This option specifies a list of IP Addresses indicating NTP servers available to the telephone. List servers in the order of preference.The minimum length is 4, and the length must be a multiple of 4.

-Option 51 - DHCP lease time.

If this option is not received, the DHCPOFFER is not be accepted. Avaya recommends a lease time of six weeks or greater. If this option has a value of FFFFFFFF hex, the IP Address lease is assumed to be infinite as per RFC 2131, Section 3.3, so that renewal and rebinding procedures are not necessary even if Options 58 and 59 are received. Expired leases cause Avaya IP Telephones to reboot. Avaya recommends providing enough leases so an IP Address for an IP telephone does not change if it is briefly taken offline.

Note:

Regarding Option 51: The DHCP standard states that when a DHCP lease expires, the device should immediately cease using its assigned IP Address. If the network has problems and the only DHCP server is centralized, the server is not accessible to the given telephone. In this case the telephone is not usable until the server can be reached. Avaya recommends that once assigned an IP Address, the telephone continues using that address after the DHCP lease expires, until a conflict with another device is detected. As Table 11: 9600 Series SIP IP Telephones Customizeable System Parameters indicates, the system parameter DHCPSTD allows an administrator to specify that the telephone will either: a). Comply with the DHCP standard by setting DHCPSTD to “1”, or b). Continue to use its IP Address after the DHCP lease expires by setting DHCPSTD to “0.” The latter case is the default. If the default is invoked, after the DHCP lease expires the telephone sends an ARP Request for its own IP Address every five seconds. The request continues either forever, or until the telephone receives an ARP Reply. After receiving an ARP Reply, the telephone displays an error message, sets its IP Address to 0.0.0.0, and attempts to contact the DHCP server again.

-Option 52 - Overload Option, if desired.

If this option is received in a message, the telephone interprets the sname and file fields in accordance with IETF RFC 2132,

Section 9.3, listed in Appendix B: Related Documentation.

-Option 53 - DHCP message type.

Value is 1 (DHCPDISCOVER) or 3 (DHCPREQUEST).

-Option 55 - Parameter Request List. Acceptable values are:

1 (subnet mask),

3 (router IP Address[es])

6 (domain name server IP Address[es])

7 (log server)

15 (domain name)

26 (Interface MTU)

42 (NTP servers)

SSON (site-specific option number)

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Avaya 9600 manual Option 42 Sntp Server, Option 51 Dhcp lease time, Option 52 Overload Option, if desired
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9600 specifications

The Avaya 9600 series is a robust line of desktop phones designed to meet the needs of modern business communication. Tailored for users who require advanced functionalities, the 9600 series offers a rich set of features that enhance productivity and collaboration in the workplace.

One of the standout features of the Avaya 9600 series is its high-resolution graphical display. The intuitive interface with customizable menu options makes it easy for users to navigate through various functions and settings. The color screen enhances visibility and allows for clearer visual communication, essential for today’s fast-paced business environments.

In terms of audio quality, the Avaya 9600 series excels with high-definition voice technology. Users can benefit from crystal-clear audio, which minimizes misunderstandings during calls and enhances remote collaboration. The phones are equipped with full-duplex speakerphone functionality, ensuring that all parties can be heard clearly during conference calls.

Another significant characteristic of the Avaya 9600 series is its support for a wide range of communication protocols, including Voice over IP (VoIP) and SIP (Session Initiation Protocol). This versatility enables seamless integration with various communication systems, making the 9600 series suitable for companies of all sizes. The phones can connect to both cloud-based and on-premise solutions, allowing businesses to choose the best communication strategy for their needs.

User personalization is a key aspect of the 9600 series. The phones come with programmable function keys that allow users to customize their setup according to individual preferences and frequently used features. Additionally, the series supports Bluetooth and USB connectivity, enabling users to connect a variety of headsets and accessories for enhanced audio options.

Security is paramount in business communications, and the Avaya 9600 series addresses this with advanced security features. The phones support encryption protocols to protect sensitive information during calls, ensuring that businesses can communicate confidentially without the risk of eavesdropping.

Lastly, the Avaya 9600 series is designed for scalability. As organizations grow, the phones can easily be integrated into existing systems or expanded to accommodate additional users without requiring significant changes to the infrastructure.

In summary, the Avaya 9600 series is a powerful communication tool that combines advanced features, superior audio quality, and robust security to empower businesses. Its adaptability and user-friendly design make it a preferred choice for organizations aiming to enhance their communication efficiency and productivity.
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