Instruction Manual
Table Of Contents
- Preface
- Introducing Linksys IP Phones
- Getting Started
- Managing Linksys IP Phones
- Using the 900 Series LCD Display
- Localization
- Changing the Display Background (SPA942/962)
- Using the SPA932 (Sidecar) with the SPA962
- Configuring the Web Service
- RSS Newsfeeds (SPA962)
- Call Appearances and Extensions
- Line Key LEDs
- Using Call Features
- Selecting the Audio I/O Device and Line
- Making Calls
- Answering and Ending Calls
- Hold and Resume
- Call Waiting
- Speed Dialing
- Three-Way Conferencing
- Attended Call Transfer
- Blind Call Transfer
- Call Back
- Message Waiting Indication (MWI)
- Accessing Voicemail
- Muting Calls
- Shared Call Appearances
- Personal Directory
- Caller and Called Name Matching
- Dialing Assistance
- Supplementary Services
- Call Logs
- Audio Volume Adjustment
- Managing Ring Tones
- Configuring a Dial Plan
- System Administration
- Troubleshooting FAQ
- SPA900 Series LCD Command Reference
- Entering Names and Numbers into the Directory
- Entering Directory Names, Numbers and Ring Default
- 2 Speed Dial
- 3 Call History
- 4 Ring Tone
- 5 Preferences
- 6 Call Forward
- 7 Time/Date
- 8 Voice Mail
- 9 Network
- 9.1 DCHP
- 9.2 Current IP Address
- 9.3 Host Name
- 9.4 Domain
- 9.5 Current NetMask
- 9.6 Current Gateway
- 9.7 Enable Web Server
- 9.8 Non DHCP IP Address
- 9.9 Non DHCP Subnet Mask
- 9.10 Non DHCP Default Route
- 9.11 Non DHCP DNS 1
- 9.12 Non DHCP DNS 2
- 9.13 Non DHCP NTP Server 1
- 9.14 Non DHCP NTP Server 2
- 9.15 Multicast Address
- 9.16 Enable VLAN
- 9.17 VLAN ID
- 9.18 CDP
- 10 Product Info
- 11 Status
- 12 Reboot
- 13 Restart
- 14 Factory Reset
- 15 Custom Reset
- 16 Set Password
- 17 Set LCD Contrast
- 18 CallPark Status
- 19 Language (SPA922, 942, and 962)
- 20 GUI Properties (SPA962)
- 21 Web Service (SPA962)
- Linksys IP Phone Field Reference
- Acronyms
- Glossary

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Linksys IP Phone Administrator Guide
Firmware Version 5.1
Chapter 5 Linksys IP Phone Field Reference
Ext Tab
SIP Settings
Note Some of the parameters in this section do not apply to the WIP310 wireless phone. Only the SIP Port
and SIP Debug Option parameters apply to the SPA901.
Field Description
SIP TOS/DiffServ Value TOS/DiffServ field value in UDP IP packets carrying a SIP message.
Defaults to 0x68.
SIP CoS Value CoS value for SIP messages.
Defaults to 3.
RTP TOS/DiffServ Value ToS/DiffServ field value in UDP IP packets carrying RTP data.
Defaults to 0xb8.
RTP CoS Value CoS value for RTP data.
Defaults to 6.
Network Jitter Level Determines how jitter buffer size is adjusted by the Linksys IP phone. Jitter buffer size is
adjusted dynamically. The minimum jitter buffer size is 30 milliseconds or (10
milliseconds + current RTP frame size), whichever is larger, for all jitter level settings.
However, the starting jitter buffer size value is larger for higher jitter levels. This setting
controls the rate at which the jitter buffer size is adjusted to reach the minimum. Select
the appropriate setting: low, medium, high, very high, or extremely high.
Defaults to high.
Jitter Buffer Adjustment Controls how the jitter buffer should be adjusted. Select the appropriate setting: up and
down, up only, down only, or disable.
Defaults to up and down.
Field Description
SIP Transport Select from UDP, TCP, or TLS.
Defaults to UDP.
SIP Port Port number of the SIP message listening and transmission port.
Defaults to 5060.
SIP 100REL Enable To enable the support of 100REL SIP extension for reliable transmission of provisional
responses (18x) and use of PRACK requests, select yes. Otherwise, select no.
Defaults to no.
EXT SIP Port The external SIP port number.