- Analog VoIP Gateway (eSBC) - SmartNode eSBC - 4 SIP Sessions (SIP b2b UA) upgradeable (max. 200) - 4 Transcoded SIP Sessions - SIP-TLS - SRTP - 2x Gig Ethernet - 1x USB port - external UI power...

- Analog VoIP Gateway (eSBC) - SmartNode eSBC - 4 SIP Sessions (SIP b2b UA) upgradeable (max. 200) - 2 Transcoded SIP Sessions (upgradeable max. 4) - SIP-TLS - SRTP - 2x Gig Ethernet - 1x USB port -...

- Analog VoIP Gateway (eSBC) - SmartNode eSBC - 4 SIP Sessions (SIP b2b UA) upgradeable (max. 200) - 1 Transcoded SIP Session (upgradeable max. 4) - SIP-TLS - SRTP - 2x Gig Ethernet - 1x USB port -...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 2x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 2x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 1x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 1x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 1x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode VoIP Gateway - 4 SIP-SIP calls (SIP b2b UA) upgradeable (max. 200) - Optional SIP-TLS/SRTP - Transcoding (max. 4calls) - 1x Gig Ethernet - external UI power (100–240...

- Analog VoIP Gateway - SmartNode FXS-SIP VoIP Gateway - 1x 10/100BaseTX - Optional SIP-TLS - SRTP - incl. external UI power (100–240 VAC) - 4-FXS/1-Ethernet

- Analog VoIP Gateway - SmartNode FXS-SIP VoIP Gateway - 1x 10/100BaseTX - Optional SIP-TLS - SRTP - incl. external UI power (100–240 VAC) - 2-FXS/1-Ethernet

- Ultra-Miniature - Supports Over 20 Voice Calling Features - SIP Signaling - Toll Quality CODECs - Centralized Management - SN200/1JS1V/EUI = 1-FXS/1-Ethernet

- Double-sided - USB-A (for phone and/or PC/MAC) - 3.5mm (laptop and/or smart device) - Noise-cancelling microphone - In-line call control - Leatherette ear pads

- Double-sided - USB-A - Noise-cancelling microphone - In-line call control - Foam ear pads

- Single-sided - USB-A - Noise-cancelling microphone - In-line call control - Foam ear pad

- Connect easily with Bluetooth and USB options - Enjoy rich, clear sound with 360˚ audio - Use simple, intuitive one-touch controls - Keep communication smooth with customized settings - USB and UC/MS...

- Get a plug-and-play USB connection - Enjoy rich, clear sound with 360˚ audio - Use simple, intuitive one-touch controls - Keep communication smooth with customized settings - USB and UC/MS Version choices...

- Two RJ-11 FXS ports -  Two  10/100 Mbps RJ-45 Ethernet ports - Power button: Reset / Problem Reporting (PRT) - LED indicators: Power, Network, Phone 1, Phone 2, PRT - Wall mountable

- Two RJ-11 FXS ports - One 10/100 Mbps RJ-45 Ethernet port - Power button: Reset / Problem Reporting (PRT) - LED indicators: Power, Network, Phone 1, Phone 2, PRT - Wall mountable

- Bluetooth (v4.1) - Binaural / Stereo - Active noise canceling technology - USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking - Hearing protection - Magnetic desktop...

- Bluetooth (v4.1) - Binaural / Stereo - Active noise canceling technology - USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking - Hearing protection - For Softphone on...

- Bluetooth (v4.1) - Binaural / Stereo - BT600 USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking / 13 days standby time - Hearing protection - Certified for Microsoft Skype...

- Bluetooth (v4.1) - Monaural - BT600 USB Bluetooth adapter included - Up to 98 ft/30m range - Up to 12 hours talking / 13 days standby time - Hearing protection - Certified for Microsoft Skype for...

- Bluetooth (v3.0) - Up to 7 hours talking / 11 days standby time - 18 grams - Multipoint - Noise canceling - Wind canceling - Smart Sensors - For Softphone on PC/MAC and/or Smartphone by Bluetooth

- 8 BRI - 16 VoIP Calls or 8 SIP-SIP calls - 8 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/8BIS16VHP/EUI: 8 X ISDN BRI/S0 ports

- 4 BRI - 8 VoIP Calls or 4 SIP-SIP calls - 4 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/4BIS8VHP/EUI: 4 X ISDN BRI/S0 ports

- 2 BRI - 4 VoIP Calls or 4 SIP-SIP calls - 2 Transcoded Calls - High Precision 5ppm Clock - 2x Gig Ethernet - 1x USB port - SN5531/2BIS4VHP/EUI: 2 X ISDN BRI/S0 ports

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E30VHP/EUI: 30 VoIP Calls NOT upgradeable

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E15VHP/EUI: 15 VoIP Calls upgradeable to 30

- 1 E1/T1 PRI - High Precision 5ppm Clock - 1x Gig Ethernet - 1x USB port - SN4171/1E15VHP/EUI: 15 VoIP Calls NOT upgradeable

- 16 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/8BIS16VHP/EUI: 8 X ISDN BRI/S0 ports

- 8 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/4BIS8VHP/EUI: 4 X ISDN BRI/S0 ports

- 4 VoIP Calls or 4 SIP-SIP calls - 1x Gig Ethernet - 1x USB port - High Precision 5ppm Clock - SN4131/2BIS4VHP/EUI: 2 X ISDN BRI/S0 ports

- Hi-Fi stereo with passive noise reduction - Connectivity to smartphone and tablet via 3.5 mm -  Leatherette ear cushions fold flat - Carrying case for easy storage and portability - Intuitive inline...

- Connectivity to smartphone and tablet via 3.5 mm - Leatherette ear cushions fold flat - Carrying case for easy storage and portability - Intuitive inline controls (answer/end/volume/mute) - PC wideband audio...

- Hi-Fi stereo with passive noise reduction - Intuitive inline controls (answer/end/volume/mute) - PC wideband audio with noise-canceling microphones - For SoftPhones (Skype, Xten, eyeBeam,...), on PC/MAC via...

- Intuitive inline controls (answer/end/volume/mute) - PC wideband audio with noise-canceling microphones - For SoftPhones (Skype, Xten, eyeBeam,...), on PC/MAC via USB Plug - Optional USB-C version (use...

- 10 SIP Accounts - 5" high-resolution (800 x 480) WVGA color display - Wideband Audio - 5-10 Programmable Line Keys - Headset Port - Bluetooth (Headset / Mobile) - 2 X USB (Charge) - Key Expansion...

- 10 SIP Accounts - 5" high-resolution (800 x 480) WVGA color display - Wideband Audio - 5-10 Programmable Line Keys - Headset Port - Bluetooth (Headset / Mobile) - 1 X USB (Charge) - Key Expansion...

- 10 SIP Accounts - 5" high-resolution (800 x 480) WVGA color display - Wideband Audio - 5-10 Programmable Line Keys - Headset Port - 2 X 10/100/1000 Ethernet switch - SIP Version (Asterisk / Broadsoft /...

- 10 SIP Accounts - 5" high-resolution (800 x 480) greyscale display - Wideband Audio - 5-10 Programmable Line Keys - Headset Port - 2 X 10/100/1000 Ethernet switch - SIP Version (Asterisk / Broadsoft /...

- 16 SIP Accounts - LCD Backlight Screen 396 X 162 - Wideband Audio - 16 Programmable Line Keys - Headset Port - 2 X 10/100 Ethernet switch - SIP Version (Asterisk / Broadsoft / Centile / Metaswitch) -...

- 4 SIP Accounts - LCD Backlight Screen 396 X 162 - Wideband Audio - 4 Programmable Line Keys - Headset Port - 2 X 10/100/1000 Ethernet switch - SIP Version (Asterisk / Broadsoft / Centile / Metaswitch)...

- 2 SIP Accounts - LCD Backlight Screen 396 X 162 - Wideband Audio - 2 Programmable Line Keys - Headset Port - 2 X 10/100 Ethernet switch - SIP Version (Asterisk / Broadsoft / Centile / Metaswitch) -...

- 1 SIP Account - LCD Screen 384 X 106 - 2 X 10/100 Ethernet switch - SIP Version ( Asterisk / Broadsoft / Centile / Metaswitch) - PoE: No Power Supply Unit supplied

- Single Connectivity - Dialogue in motion - ActiveGard® - Full work day talk time - Phone conferencing - 2-in-1 wearing style - Fast charging - Noise-cancelling microphone

- Certifed for Skype for Business - Sennheiser HD voice clarity - Noise canceling microphone - High-Comfort - Solid construction - Dual-sided wearing style - Bendable boom arm - ActiveGard™ - Peace...

- Certifed for Skype for Business - Sennheiser HD voice clarity - Noise canceling microphone - High-Comfort - Solid construction - Single-sided wearing style - Bendable boom arm - ActiveGard™ - Peace...

- Cable for Smartphone and DECT

- DECT / GSM cable

- Headset cable for Avaya 1600/9600 series phones

- Headset connector cable with high microphone sensitivity

- Standard headset connection cable with standard microphone sensitivity

- Standard headset connection cable

- Best-in-class Comfort - Noise-canceling microphone - Unique Robust Construction - Dual-sided wearing style - Durability - Sennheiser HD Voice Clarity - Bendable Boom Arm - Pivotable Boom - Name...

- Best-in-class Comfort - Noise-canceling microphone - Unique Robust Construction - Single-sided wearing style - Durability - Sennheiser HD Voice Clarity - Bendable Boom Arm - Pivotable Boom - Name...

- Wireless hands free solution for GAP DECT phones - Discrete desk charger/headset holder - Range: with DECT phones, up to 120m, 60m in typical offie - Answer/End, Mute and volume controls - Up to 7 hrs talk...

- 15 to 120 VoIP calls - WAN Access - VoIP Transcoding Option - Proven Interoperability - QoS and Security - Transparent Telephony Features - High Precision Clock - Flexible Mounting Options -...

- 15 to 120 VoIP calls - VoIP Transcoding Option - Proven Interoperability - QoS and Security - Transparent Telephony Features - High Precision Clock - Flexible Mounting Options - Supported by...

- Easy to install , and designed exclusively for the Cisco SPA 500 Series IP Phones - 15 programmable buttons simplify dialing and call transfers - Page Left and Page Right keys allow configuration of up to 30...