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
1-4
Linksys IP Phone Administrator Guide
Firmware Version 5.1
Chapter 1 Introducing Linksys IP Phones
Linksys IP Phone Features
SPA92x, SPA94x, SPA962
The SPA921, SPA922, SPA941, SPA942, and SPA962 provide an LCD display and additional features
that are not provided with the SPA901, including the following:
• Line Status Indicators: Active Line, Name, and Number
• Menu-Driven User Interface
• Digits Dialed with Number Auto-Completion
• Caller ID Name and Number and Outbound Caller ID Blocking
• On-Hook Dialing
• Redial from Call Logs
• Personal Directory with Auto-dial (100 entries)
• On Hook Default Audio Configuration (Speakerphone and Headset)
• Called Number with Directory Name Matching
• Call Number using Name - Directory Matching or via Caller ID
• Subsequent Incoming Calls with Calling Name and Number
• Name and Identity (Text) Displayed at Start Up
• Distinctive Ringing Based on Calling and Called Number
Ensuring Voice Quality
Voice quality perceived by the subscribers of the IP Telephony service should be indistinguishable from
that of the PSTN. Voice quality can be measured with such methods as Perceptual Speech Quality
Measurement (PSQM), with a scale of 1–5, in which lower is better; and Mean Opinion Score (MOS),
with a scale of 1–5, in which higher is better.
Table 1-2 displays speech quality metrics associated with various audio compression algorithms. For
information about bandwidth requirements for each supported codec, refer to Table 2-1 on page 2-10.
Note Linksys IP phones support all the above voice coding algorithms.
Ta bl e 1-2 Speech Quality Metrics
Algorithm Complexity MOS Score
G.711 Very low
4.5
G.726 Low 4.1 (32 kbps)
G.729a Low–medium 4
G.729 Medium 4
G.723.1 High 3.8