User's Manual

Chapter 17: Internet Protocol version 6
Internet Protocol version 6 (IPv6) is a network layer for packet-switched internetworks and is the successor
of IPv4.
IPv6 provides larger address space, which allows greater flexibility in assigning addresses. The extended
address length used within IPv6 eliminates the need to use Network Address Translation to avoid address
exhaustion to simplify the aspects of address assignment and renumbering when changing providers.
The IP Deskphones can be configured to support IPv4 and IPv6 protocols. IP Deskphones use IPv4
mechanisms (for example, DHCP) to acquire their IPv4 addresses and IPv6 mechanisms (for example,
Stateless autoconfiguration) to acquire their IPv6 addresses.
IPv6 uses a hierarchical method to allocate IP addresses, which provides simplified routing and
renumbering.
IPv6 provides the following:
• 128 bits for address space compared to 32 bits for IPv4
• well defined Quality of Service (QoS) mechanism
• simplified configuration (stateless autoconfiguration)
SIP IP Deskphones provide complete support for IPv4 and IPv6 Internet protocols, as follows:
• provides transition mechanism to IPv6
• enables SIP IP Deskphones to interoperate with IPv4 hosts and utilize IPv4 routing
• able to send and receive both IPv4 and IPv6 packets
• interoperates directly with IPv4 nodes using IPv4 packets
• interoperates directly with IPv6 nodes using IPv6 packets
IPv6 and IPv4 IP Deskphones operate in on of two modes:
• both IPv4 enabled and IPv6 stack disabled (default)
• both IPv4 and IPv6 stacks enabled
IPv6 address entry
Addresses are entered using hexadecimal or alphanumeric formats. The tables below list the
key sequences.
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