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Protocol Action: DHCP Option for SIP Servers to Proposed Standard
The IESG has approved the Internet-Draft 'DHCP Option for SIP Servers'
<draft-ietf-sip-dhcp-06.txt> as a Proposed Standard. This document
is the product of the Session Initiation Protocol Working Group.
The IESG contact persons are Allison Mankin and Scott Bradner.
The Session Initiation Protocol (SIP) is an application-layer control
protocol that can establish, modify and terminate multimedia sessions or
calls. The SIP WG is developing its particular use for signaling of
Internet telephony calls. A SIP system has two components: user agents
and servers. The user agent is the SIP end system that acts on behalf of
someone who wants to participate in a SIP call.
SIP-DHCP specifies a DHCP option that allows SIP user agents (clients)
to locate a local SIP server that is to be used for outbound SIP
requests, the outbound proxy server.
The SIP client obtains a DNS string via a DHCP option. This
string is then used by the mechanism specified by the recently
published Proposed Standard, Locating SIP Servers, to locate
the outbound proxy server.
This is one of many possible solutions for locating the outbound
Working Group Summary
The SIP working group supported this proposal. The proposal was also
given working group last call and very carefully reviewed by the DHC
Working Group. Originally the DHCP and server location specifications
were in one draft. The IESG requested the two be separated and the
server location draft was advanced to Proposed Standard recently.
This document was reviewed for the IESG by Allison Mankin. The
DHCP usage was reviewed in tremendous detail by Thomas Narten and
Ralph Droms, and corrections were made and Last Called to bring
the work in line with other DHCP usage of DNS names.