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
call actually uses G.729a. If the G.729a resource is already allocated and since only one G.729a resource
is allowed per device, no other low-bit-rate codec may be allocated for subsequent calls; the only choices
are G711a and G711u. On the other hand, two G.723.1/G.726 resources are available per device.
Therefore it is important to disable the use of G.729a in order to guarantee the support of two
simultaneous uses of the G.723/G.726 codecs.
Field Description
Preferred Codec Preferred codec for all calls. (The actual codec used in a call still depends on the outcome of
the codec negotiation protocol.) Select one of the following: G711u, G711a, G726-16,
G726-24, G726-32, G726-40, G729a, or G723.
Defaults to G711u.
Silence Supp Enable To enable silence suppression so that silent audio frames are not transmitted, select yes. Oth-
erwise, select no.
Defaults to no.
Use Pref Codec Only To use only the preferred codec for all calls, select yes. (The call fails if the far end does not
support this codec.) Otherwise, select no.
Defaults to no.
Echo Canc Enable Enable the use of the echo canceller.
Defaults to yes.
Echo Canc Adapt Enable Enable the echo canceller to adapt.
Defaults to yes.
Echo Supp Enable Enable the use of echo suppressor. If <Echo Canc Enable> is “no,” this parameter is
ignored.
Defaults to yes.
G729a Enable To enable the use of the G.729a codec at 8 kbps, select yes. Otherwise, select no.
Defaults to yes.
G723 Enable To enable the use of the G.723a codec at 6.3 kbps, select yes. Otherwise, select no.
Defaults to yes.
G726-16 Enable To enable the use of the G.726 codec at 16 kbps, select yes. Otherwise, select no.
Defaults to yes.
G726-24 Enable To enable the use of the G.726 codec at 24 kbps, select yes. Otherwise, select no.
Defaults to yes.
G726-32 Enable To enable the use of the G.726 codec at 32 kbps, select yes. Otherwise, select no.
Defaults to yes.
G726-40 Enable To enable the use of the G.726 codec at 40 kbps, select yes. Otherwise, select no.
Defaults to yes.
FAX CED Detect Enable To enable detection of the fax Caller-Entered Digits (CED) tone, select yes. Otherwise,
select no.
Defaults to yes.