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General

Product IDSPA500SSPA500DSSPA501GSPA502GSPA504GSPA508GSPA509GSPA512GSPA514GSPA525G2
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Product TypeKey expansion moduleKey expansion moduleVoIP phoneVoIP phoneVoIP phoneVoIP phoneVoIP phoneVoIP phoneVoIP phoneVoIP phone
Body Colordark graydark graySilver, dark graySilver, dark graySilver, dark graySilver, dark graySilver, dark graySilver, dark graySilver, dark graySilver, dark gray
Body MaterialABS plasticABS plasticABS plasticABS plasticABS plasticABS plasticABS plasticABS plasticABS plasticABS plastic

Phone Features

Cordless Phone StandardN/AN/AN/AN/AN/AN/AN/AN/AN/AIEEE 802.11g (Wi-Fi)
Key Expansion Module Max QtyN/AN/A22222222
Dialer TypeN/AN/AKeypadKeypadKeypadKeypadKeypadKeypadKeypadKeypad
Dialer LocationN/AN/ABaseBaseBaseBaseBaseBaseBaseBase
Conference Call CapabilityN/AN/A3-way3-way3-way3-way3-wayYesYes3-way
IntercomN/AN/AYesYesYesYesYesN/AN/AYes
SpeakerphoneN/AN/AYesYesYesYesYesYesYesYes
Caller IDN/AN/AN/AYesYesYesYesYesYesYes
Automatic RedialN/AN/AYesYesYesYesYesYesYesYes
Voice Mail CapabilityN/AN/AYesYesYesYesYesYesYesYes
Call WaitingN/AN/AYesYesYesYesYesYesYesYes
Call ForwardingN/AN/AYesYesYesYesYesYesYesYes
Call TransferN/AN/AYesYesYesYesYesYesYesYes
Call HoldN/AN/AYesYesYesYesYesYesYesYes
Menu OperationN/AN/AN/AYesYesYesYesYesYesYes
Function ButtonsN/AN/AConference button, speakerphone button, transfer button, headset button , mute button, hold button, redial button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail buttonConference button, speakerphone button, headset button , mute button, hold button, voice mail button
Programmable Buttons Qty3215 on each page ( 30 total )8N/A4812N/A45
Volume ControlN/AN/AYesYesYesYesYesYesYesYes
Ringer ControlN/AN/AYesYesYesYesYesYesYesYes
IndicatorsN/A Voice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, muteVoice message waiting indicator, speakerphone indicator, headset, mute
Firmware UpgradableN/AN/AYesYesYesYesYesYesYesYes
Additional FunctionsN/AN/APager callCall timer, built-in clock, pager callCall timer, built-in clock, pager callCall timer, built-in clock, pager callCall timer, built-in clock, pager callCall timer, built-in clock, pager callCall timer, built-in clock, pager callCall timer, built-in clock, pager call
Additional FeaturesN/AN/AOn-hook dialing, music on hold, built-in web server, paper label insertOn-hook dialing, music on hold, built-in web serverOn-hook dialing, music on hold, built-in web serverOn-hook dialing, music on hold, built-in web serverOn-hook dialing, music on hold, built-in web serverOn-hook dialing, music on hold, built-in web serverOn-hook dialing, music on hold, built-in web serverMusic on hold, built-in web server, compatible with Bluetooth headsets and Smartphones (Mobile Line Feature)

IP Telephony

Main FeaturesN/AN/AMultiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) supportMultiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) supportMultiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) supportMultiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) supportMultiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) supportMultiline support, multiple VoIP protocol support, integrated GigE Ethernet switch, EHS and Power over Ethernet (PoE) support, TR-69/104/111Multiline support, multiple VoIP protocol support, integrated GigE Ethernet switch, EHS and Power over Ethernet (PoE) support, TR-69/104/111Multiline support, multiple VoIP protocol support, integrated GigE Ethernet switch, EHS and Power over Ethernet (PoE) support, TR-69/104/111, WiFi, Bluetooth
VoIP ProtocolsN/AN/ASIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCPSIP, SIP v2, SPCP
Voice CodecsN/AN/AG.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726G.722, G.729a, G.711u, G.711a, G.726
Lines SupportedN/AN/A8 lines1 Line4 lines8 lines12 lines1 Line4 lines5 lines
Quality of ServiceN/AN/AIEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)IEEE 802.1Q (VLAN), Differentiated Services (DiffServ), IEEE 802.1p, Type of Service (ToS)
IP Address AssignmentN/AN/ADHCP, staticDHCP, staticDHCP, staticDHCP, staticDHCP, staticDHCP, staticDHCP, staticDHCP, static, PPPoE
SecurityN/A SIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPSSIP/TLS, SRTP, HTTPS, 128 bit WEP, 64 bit WEP, WPA, WPA2, 256 bit AES
Network ProtocolsN/A IP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MEDIP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS, SRTP, CDP, LLDP-MED
Network Ports QtyN/A 2 x Ethernet 10Base-T/100Base-TX2 x Ethernet 10Base-T/100Base-TX2 x Ethernet 10Base-T/100Base-TX2 x Ethernet 10Base-T/100Base-TX2 x Ethernet 10Base-T/100Base-TX2 x Ethernet 10Base-T/100Base-TX/1000Base-T2 x Ethernet 10Base-T/100Base-TX/1000Base-T2 x Ethernet 10Base-T/100Base-TX
Voice FeaturesN/A Comfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD VoiceComfort noise generation (CNG), voice activity detection (VAD), HD Voice
Network FeaturesN/A Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)Network Address Translation (NAT)

Phone Memory

Phone Directory CapacityN/AN/A100 names & numbers100 names & numbers100 names & numbers100 names & numbers100 names & numbers150 names and numbers150 names and numbers300 names and numbers
Call Log CapacityN/AN/A60 numbers each for missed, placed and answered60 numbers each for missed, placed and answered60 numbers each for missed, placed and answered60 numbers each for missed, placed and answered60 numbers each for missed, placed and answered100 numbers each for missed, placed and answered100 numbers each for missed, placed and answered60 numbers each for missed, placed and answered

Display

Diagonal SizeN/A5.5"N/A3.0"3.0"3.0"3.0"3.0"3.0"3.2"
TypeN/ALCD display - monochrome backlitN/ALCD display - monochrome backlitLCD display - monochrome baclitLCD display - monochrome backlitLCD display - monochrome backlitLCD display - monochrome backlitLCD display - monochrome backlitLCD display - color
Display LocationN/ABaseN/ABaseBaseBaseBaseBaseBaseBase
Display ResolutionN/A128 x 320N/A128 x 64 pixels128 x 64 pixels128 x 64 pixels128 x 64 pixels128 x 64 pixels128 x 64 pixels320 x 240 pixels, QVGA
FeaturesN/ABacklitN/ABacklitBacklitBacklitBacklitBacklitBacklitBacklit

Miscellaneous

Included AccessoriesStandStandStandStandStandStandStandStandStandStand
Hearing Aid CompatibleN/AN/AYesYesYesYesYesYesYesYes
ConnectionsAUX in/outAUX in/out1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm1 x headset jack / sub-mini-phone 2.5 mm
Cables IncludedAUX CableAUX CableNetwork cableNetwork cableNetwork cableNetwork cableNetwork cableNetwork cableNetwork cableN/A
Compliant StandardsUL, C-Tick, CB, A-TickUL, C-Tick, CB, A-TickUL, C-Tick, CB, FCC Part 15 B, A-TickUL, C-Tick, CB, FCC Part 15 B, A-TickUL, C-Tick, CB, FCC Part 15 B, A-TickUL, C-Tick, CB, FCC Part 15 B, A-TickUL, C-Tick, CB, FCC Part 15 B, A-TickUL, FCC, RoHS, WEEE, A-TickUL, FCC, RoHS, WEEE, A-TickC-Tick, CISPR 22 Class B, CISPR 24, cUL, EN 60950, EN 61000-3-2, IEC 60950, EN 61000-3-3, EN55024, UL 60950, EN50082-1, EN55022 Class B, ICES-003 Class B, EN 61000-6-1, FCC Part 15 B, FCC, FCC CFR47 Part 68, RoHS

Dimensions & Weight (Base)

Width4.0 in4.0 in8.4 in8.4 in8.4 in8.4 in8.4 in8.4 in8.4 in8.4 in
Depth1.5 in1.5 in1.7 in1.7 in1.7 in1.7 in1.7 in1.7 in1.7 in1.7 in
Height8.5 in8.5 in8.3 in8.3 in8.3 in8.3 in8.3 in8.3 in8.3 in8.3 in
Weight0.5 lbs1.2 lbs2 lbs2 lbs2 lbs2 lbs2 lbs2.4 lbs2.4 lbs2 lbs

Manufacturer Warranty

Manufacturer Warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty
Service & Support1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty1 year warranty
Service & Support DetailsLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 yearLimited warranty - 1 year

Designed For

Designed For3rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers3rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 5003rd Party Call Controllers and Cisco Small Business Pro Unified Communications 320 and 500