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Updated:September 14, 2009
Q. What is the Cisco SPA508G?
A. The Cisco
® SPA508G is an 8-line desktop IP phone with display, 802.3af Power over Ethernet (PoE), and PC port. It includes a full-duplex speakerphone with wideband audio capability.
Q. When will the Cisco SPA508G be available to order?
A. The SPA508G is available now for order on the wholesale price list (WPL).
Q. What is the part number for ordering the Cisco SPA508G?
A. The part number is SPA508G: 8-Line IP Phone with Display, PoE, and PC Port.
Q. Who are the target customers for the Cisco SPA508G?
A. Target customers for the SPA508G include the following:
• Home and small offices that:
– Want an IP phone with superior voice quality and extra line keys for other applications
– Want voice communication mobility and flexibility
• Small businesses with on-premises or hosted private branch exchange (PBX) service that:
– Want to integrate the SPA508G with an existing Cisco Unified Communications 500 or 300 Series, or hosted voice over IP (VoIP) service with PBX features
– Want phones for use on employee desks
– Food and beverage
– Legal, medical, or financial services
Q. Who can sell the Cisco SPA508G?
A. Any authorized partners who can buy the SPA508G through their distributors.
Q. What accessories are available for the Cisco SPA508G?
A. An optional power adapter (Cisco PA100 Power Supply for Small Business VoIP) is available for users who choose not to use PoE. A wall-mount kit (Cisco MB100 Wall-Mount Bracket) is available for mounting the phone on a wall, and the Cisco WBP54G Wireless-G Bridge provides a wireless option. The Cisco SPA500S Expansion Module is available for customers who need an attendant console.
Q. What languages are supported?
A. The following languages will be supported via a dictionary update to the phone: German, French, Dutch, Italian, Spanish, Portuguese, Danish, Norwegian, Swedish, Croatian, Slovenian, Bulgarian, Turkish, Polish, Russian, Hungarian, Czech, and Slovak.
Q. What voice protocols supported?
A. The Cisco SPA508G supports both Session Initiation Protocol (SIP) version 2 with the Cisco Unified Communications 300 Series and third-party call controllers and the Smart Phone Control Protocol (SPCP) with the Cisco Unified Communications 500 Series.
Q. What codecs are supported?
A. The Cisco SPA508G supports G.711a, G.711u, G.726_32, G.729ab, and G.722 (wideband audio).
Q. How many independent SIP registration does the Cisco SPA508G support?
A. The SPA508G can support up to four independent SIP registrations.
Q. Does the Cisco SPA508G offer a full-duplex speakerphone?
A. Yes, the SPA508G includes a full-duplex speakerphone with advanced acoustic echo cancellation.
Q. Does the Cisco SPA508G support VLAN tagging on the PC port?
A. Yes, the SPA508G supports the option to configure VLAN tagging on traffic originating from the PC port.
Q. What standard calling features are supported?
A. The Cisco SPA508G supports the following features (some features require support on call controllers):
• Auto answer
• Call waiting, cancel call waiting, call waiting caller ID
• Caller ID with name and number (multinational variants)
Q. Does the Cisco SPA508G support the full range of Cisco SBCS applications?
A. Yes. The SPA508G supports the following with UC500.
• Live Record/Live Replay
• Single Number Reach
• VoiceView Express
Q. What types of headsets does the Cisco SPA508G support?
A. The SPA508G has a 2.5-mm standard 4-segment phone jack. It supports most universal 2.5-mm wired headsets (non Nokia versions), such as the Jabra C250/C500 (
http://www.jabra.com) and the Plantronics MX250 (
Q. What types of security can be implemented?
A. The Cisco SPA508G supports the following security features:
• Secure Real-Time Transport Protocol (SRTP) (media)
• Transport Layer Security (TLS) (signaling), SIP over TLS
• Encrypted configuration files up to 256-bit Advanced Encryption Standard (AES)
Q. Does the Cisco SPA508G support Lightweight Directory Access Protocol (LDAP) corporate directory?
A. Yes, the SPA508G supports an LDAP corporate directory structure.
Q. Does the Cisco SPA508G support remote management?
A. Yes. The service provider can update voice configuration parameters using one of the supported mass provisioning methods (TFTP, HTTP, or HTTPS).
Q. Does the Cisco SPA508G support Extension Mobility with the Cisco Unified Communications 500 Series?
Q. Does the Cisco SPA508G support Extension Mobility with Broadsoft?
Q. Is the Cisco Small Business Support Service available for the Cisco SPA508G?
A. Yes, customers can purchase a 3-year Cisco Small Business Support Plan. This plan offers second-day advance replacement and technical support.
Q. What type of warranty is provided with the Cisco SPA508G?
A. The SPA508G comes with a standard 90-day software warranty and 12-month hardware warranty.
• The 12-month hardware warranty provides 10-business-day advance replacement.
• Customers are eligible for 12 months of Small Business Support Center Technical Phone Support. Small Business Support Center technical support provides only basic steps to identify the phone's hardware state for return materials authorization (RMA).
Q. Does the Cisco SPA508G have a message-waiting indicator LED?
Q. Does the Cisco SPA508G work with instant messaging applications?
Q. Does the Cisco SPA508G support syslog?
Q. What and how many ring tones does the Cisco SPA508G support?
A. The SPA508G supports 10 built-in and 2 customizable ring tones. Custom ring tones can be downloaded using the web GUI with the link http://<phone-ip-addr>/ringtone[1|2][?<url>], where <url> syntax is [[tftp|http|https]://][host[:port]]/<pathname>. TFTP, HTTP, and secure HTTP are supported.
If the phone's IP address is 192.168.2.1, to download a ring tone "music.mid" residing on the HTTP server 192.168.2.100, and store it as "ringtone2," the user would issue the following link on a web browser that is connected to the same LAN as the phone: http://192.168.2.1/ringtone2?http://192.168.2.100/music.mid.
Q. What ring tone formats are supported?
A. Table 1 shows the association of ring tone suffix to ring tone format.
Table 1. Ring Tone Formats for the Cisco SPA508G
Ring Tone Format
Ring Tone Suffix
Q. How can the firmware be upgraded?
A. The firmware can be upgraded in any of the following ways:
Remotely: An IP telephony service provider (ITSP) can upgrade the firmware remotely from an HTTP server or by using a profile for the phone.
By downloading .exe firmware, and executing it locally on a PC.