Presence...................................................................................................................................................
145
Notifications...............................................................................................................................................
146
Account selection......................................................................................................................................
147
Feature dependencies and restrictions.....................................................................................................
147
Configuration files.....................................................................................................................................
148
Performance characteristics......................................................................................................................
148
Chapter 14: Features..........................................................................................................
149
Customizable banner for login..................................................................................................................
149
Speed Dial List..........................................................................................................................................
151
Administration and use of the Speed Dial List feature..............................................................................
152
Speed Dial List screen..............................................................................................................................
153
Auto retrieve flag.......................................................................................................................................
154
Busy Lamp Field.......................................................................................................................................
155
Configuration flags for Busy Lamp Field...................................................................................................
156
Chapter 15: Hotline service................................................................................................
157
Making a Hotline call.................................................................................................................................
157
Hotline service restrictions........................................................................................................................
157
Provisioning...............................................................................................................................................
158
Service Package.......................................................................................................................................
158
Device configuration file............................................................................................................................
158
Chapter 16: Session Timer Service...................................................................................
161
Session-Expires header............................................................................................................................
161
Min-SE header..........................................................................................................................................
161
Provisioning...............................................................................................................................................
162
Chapter 17: Emergency Services......................................................................................
165
Overview...................................................................................................................................................
165
Location information..................................................................................................................................
165
Dialing plan configuration..........................................................................................................................
166
Feature impact on configuration tasks......................................................................................................
167
Network Element.......................................................................................................................................
168
Characteristics of emergency calls...........................................................................................................
169
Shut down and restart...............................................................................................................................
170
Chapter 18: IP Deskphone restrictions.............................................................................
171
Service package restrictions.....................................................................................................................
171
Distinctive Ringing feature........................................................................................................................
171
Chapter 19: NAT firewall traversal.....................................................................................
173
Chapter 20: Three-port switch and VLAN functionality...................................................
175
System overview.......................................................................................................................................
175
Chapter 21: SIP messages supported by the IP Deskphone..........................................
179
SIP methods..............................................................................................................................................
179
SIP responses...........................................................................................................................................
180
1xx Response—Information Responses...................................................................................................
180
2xx Response—Successful responses.....................................................................................................
181
3xx Response—Redirection responses....................................................................................................
181
4xx Response—Request failure responses..............................................................................................
182
5xx Response—Server failure responses.................................................................................................
184
6xx Response—Global responses............................................................................................................
185
8 SIP Software for Avaya 1200 Series IP Deskphones-Administration January 2012
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