Avaya 9608 Administrator's Manual page 13

Major differences between 9600 Series H.323 and SIP IP Deskphones
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functionality within SIP Enablement Services (SES) or Avaya Aura Session Manager for
backup and restore functions.
Settings File & System Parameters - Both SIP and H.323 9600 Series IP Deskphones (and
4600 Series IP Telephones) use the same settings file. Some of the same system parameters
are used, however numerous SIP-specific parameters support SIP operation only. In H.323
9600 Series IP Deskphones, the parameters OPSTAT and APPSTAT control all user interface
functions, whereas SIP deskphones use a separate parameter (for example
ENABLE_CONTACTS, ENABLE_CALL_LOG) for each user interface function.
Language Support - SIP deskphones support many of the same languages and fonts as H.323
deskphones but there are some differences. As of SIP software Release 6.0.1, SP1, SIP
deskphones support the English Large Text Font for the 9608, 9611G, 9621G, and 9641G
Deskphones. SIP deskphones support text entry in Hebrew or Korean while H.323 deskphones
do not. Further, all SIP language files have .xml file extensions whereas H.323 language files
have .txt file extensions.
SNMP & MIBs - Although both SIP and H.323 deskphones support SNMP v2c and have custom
Management Information Bases (MIBs) the MIBs for each protocol are formatted somewhat
differently.
RSVP - SIP deskphones do not use RSVP (Resource ReSerVation Protocol) software to
provide real-time monitoring and historical data of audio quality for VoIP calls.
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QoS - Unlike H.323 deskphones, SIP deskphones do not use Avaya Aura Communication
Manager to set Quality of Service (QoS). The SIP deskphones use the parameters L2QAUD,
L2QSIG, DSCPAUD, and DSCPSIG (described in Administering QoS on page 50).
NAT - SIP deskphones do not support Network Address Translation (NAT); H.323 deskphones
do support NAT.
Presence - SIP deskphones support presence for designated contacts when used in
conjunction with SES or Session Manager, however, presence is handled differently depending
on which solution is used. In addition to appearing on the Phone screen, presence information
is shown on the Call History Log and for Favorite Features. H.323 deskphones do not support
presence tracking. H.323 deskphones support team member tracking (similar to presence), and
SIP deskphones do not.
Issue 1 May 2011 13