
Issue 1 January 2008 13
Chapter 2: Administration Overview and
Requirements
Avaya Agent Deskphone 16CC Telephones
The Avaya Agent Deskphone 16CC telephones support the SIP signaling protocol only. Avaya
SIP Telephony architecture consists of:
● Avaya Communication Manager (CM), the feature server
● Gateways (also implemented via CM)
● A SES (SIP Enablement Server) which implements the Proxy, Registrar, Event Server,
Personal Profile Manager (PPM), System Management Service (SMS), and Location
Service components for SIP support
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),
● Call signaling (INVITE, BYE)
● Control signaling (SUBSCRIBE, NOTIFY)
The Avaya Agent Deskphone 16CC supports Media Encryption (SRTP) and uses built-in Avaya
SIP Certificates for trust management. Trust management involves downloading certificates for
additional trusted Certificate Authorities (CA) and the policy management of those CAs. Identity
management is handled by Simple Certificate Enrollment Protocol (SCEP) with phone
certificates and private keys.
The Avaya Agent Deskphone 16CC telephones are factory-loaded with SIP software, but obtain
additional data as part of initial script file administration and initialization during installation. For
more information, see Chapter 2 in the Avaya Agent Deskphone 16CC Installation and
Maintenance Guide. Post-installation, software upgrades automatically download using the
proper signaling protocol. For more information, see Chapter 4 in the Avaya Agent Deskphone
16CC Installation and Maintenance Guide.
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