Sip Clients - Cisco 7905G Administrator's Manual

Chapter 1 Overview of the Cisco IP Phone Models 7905G and 7912G
Figure 1-2 SIP Architecture
P user agents

SIP Clients

OL-4277-01
SIP proxy and
redirect servers
SIP
SIP
RTP
Related Topic
SIP Functions, page 1-7
•
• SIP Clients, page 1-9
SIP Servers, page 1-10
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SIP clients include the following:
Telephones—Act as either UAS or UAC. The Cisco IP Phone models 7905G
•
and 7912G can initiate SIP requests and respond to requests.
Gateways—Provide call control. Gateways provide many services, the most
•
common being translation between SIP conferencing endpoints of
transmission format, communications procedures, and codecs. Other
functions include call setup and clearing on both the LAN side and the
switched-circuit network side.
Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
SIP
SIP gateway
Legacy PBX
SIP Overview
PSTN
1-9