Chapter 2: Administration Overview And Requirements; 1600 Series Ip Telephones - Avaya one-X 1603SW Administrator's Manual

Chapter 2: Administration Overview and

1600 Series IP Telephones

The 1603SW-I IP Deskphones currently support the H.323 signaling protocol and the SIP
signaling protocol.
The H.323 standard provides for real time audio, video, and data communications transmission
over a packet network. An H.323 telephone protocol stack comprises several protocols:
H.225 for registration, admission, status (RAS), and call signaling,
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H.245 for control signaling,
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Real Time Transfer Protocol (RTP), and
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Real Time Control Protocol (RTCP)
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SIP was developed by the IETF. Like H.323, SIP provides for real time audio, video, and data
communications transmission over a packet network. SIP uses various messages, or methods,
to provide:
Registration (REGISTER),
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Call signaling (INVITE, BYE)
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Control signaling (SUBSCRIBE, NOTIFY)
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The 1603SW-I SIP Deskphones use built-in Avaya SIP Certificates for trust management.
The 1603SW-I SIP Deskphones do not support Media Encryption (SRTP).
The 1603SW-I IP Deskphones are loaded with either H.323 or SIP software as part of initial
16xxupgrade.txt file administration and initialization during installation. Post-installation,
software upgrades automatically download using the proper signaling protocol.
Requirements
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