Yealink SIP-T48G Administrator's Manual page 478

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
7. Enter the user name and password authenticated by the IP phone in the
Connection Request Username and Connection Request Password fields.
8. Click Confirm to accept the change.
IPv6 is the next generation network layer protocol, designed as a replacement for the
current IPv4 protocol. IPv6 is developed by the Internet Engineering Task Force (IETF) to
deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 uses a 128-bit
address, consisting of eight groups of four hexadecimal digits separated by colons. VoIP
network based on IPv6 can ensure QoS, a set of service requirements to deliver
performance guarantee while transporting traffic over the network.
IPv6 Address Assignment Method
Supported IPv6 address assignment methods:
Manual Assignment: An IPv6 address and other configuration parameters (e.g.,

DNS server) for the IP phone can be statically configured by an administrator.
Stateless Address Autoconfiguration (SLAAC): SLAAC is one of the most convenient

methods to assign IP addresses to IPv6 nodes. SLAAC requires no manual
configuration of the IP phone, minimal (if any) configuration of routers, and no
additional servers. To use IPv6 SLAAC, the IP phone must be connected to a
network with at least one IPv6 router connected. This router is configured by the
network administrator and sends out Router Advertisement announcements onto
the link. These announcements can allow the on-link connected IP phone to
configure itself with IPv6 address, as specified in RFC 4862.
Stateful DHCPv6: The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) has

been standardized by the IETF through RFC3315. DHCPv6 enables DHCP servers to
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