SIP Phones
Much of the economic saving of the I-Net Hosted PBX comes from the way that any SIP-based phone can be used on a properly implemented infrastructure, avoiding expensive vendor lock-in.
All of the phones listed below are fully compatible with the I-Net Hosted PBX. They have all been are tried and tested by ourselves and known to work well in an open environment with other competent SIP implementations. Your phone supplier will be able to offer full support and installation assistance should this be required.
Selected VoIP Phones
Aastra 6755i – exceptional features in an advanced, expandable IP phone

The Aastra 6731i, a new member of the carrier-grade, open-standards based 67xi SIP portfolio, offers exceptional features and flexibility in a enterprise grade IP telephone. With a sleek, elegant design and a compact footprint, this multi-line SIP telephone delivers the advanced features and performance traditionally found only in higher priced products. Featuring a 3 line LCD display, the 6731i supports up to 6 lines with call appearances, offers advanced XML capability to access custom applications and is fully interoperable with leading IP-PBX platforms.
Supported by a host of Aastra configuration options, XML development tools and continuous product enhancements via software releases, the value offered by the 6731i makes it is ideally suited for daily telephone use for the small and large business market and enterprise applications.
Features
- XML Browser - The Aastra 6755i/55i is equipped with XML browser capabilities and a large display with dynamic softkeys to easily access customized services and applications. Create internal service applications using development guides available from Aastra. This feature provides unlimited potential to customize the Aastra 6755i/55i to meet your specific business needs or vertical applications using the display and keypad.
- Enhanced Call Management - With extensive storage capacity for personal directories, callers logs and redial lists and 12 programmable keys, the Aastra 6755i/55i can improve efficiency by providing more call information with the push of a button. Features such as shared call and bridged line appearances, call forward, call transfer, call waiting, intercom and local 3-way conference increase call flexibility and control.
- Expandability -The Aastra 6755i/55i supports up to three Aastra 536M modules, each offering 36 keys with LED indicators to create a feature rich attendant console.
- Remarkable Audio - All Aastra IP telephones offer full-duplex speakerphone with excellent voice clarity and delivery. With years of experience in telecommunications and telephone design, Aastra can ensure superior voice quality on every phone model.
- Simplified Deployment - From initial deployment and configuration to future enhancements and upgrades, the Aastra family of IP telephones are designed to save your business time and money. Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup. Easily created configuration files, using any text editor, can be used to configure phones individually or centrally
Aastra 6731i – exceptional value in an entry level, feature rich IP phone
The Aastra 6731i, a new member of the carrier-grade, open-standards based 67xi SIP portfolio, offers exceptional features and flexibility in a enterprise grade IP telephone. With a sleek, elegant design and a compact footprint, this multi-line SIP telephone delivers the advanced features and performance traditionally found only in higher priced products. Featuring a 3 line LCD display, the 6731i supports up to 6 lines with call appearances, offers advanced XML capability to access custom applications and is fully interoperable with leading IP-PBX platforms.
Supported by a host of Aastra configuration options, XML development tools and continuous product enhancements via software releases, the value offered by the 6731i makes it is ideally suited for daily telephone use for the small and large business market and enterprise applications.
Features
- Enhanced Call Management
With extensive storage capacity for personal directories, callers logs and redial lists, the Aastra 6731i can improve efficiency by providing more call information with the push of a button. Features such as shared call and bridged line appearances, call forward, call transfer, call waiting, intercom and local 3-way conference increase call flexibility and control.
- Remarkable Audio
All 67xi Series IP Telephones offer full-duplex speakerphone for excellent voice clarity and delivery.
- Simplified Deployment with the VoIPCortex IP PBX
From initial deployment and configuration to future enhancements and upgrades, the Aastra 6731i is designed to save your business time and money. Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup - and the phone auto provisions with the VoIPCortex IP PBX
Aastra 6757i – exceptional features in an advanced, expandable IP phone

The 6757i/57i from Aastra offers powerful features and flexibility in a standards based, carrier-grade advanced level expandable IP telephone. With a sleek and elegant design, large 144 x 128 pixel graphical backlit LCD display and 6 dynamic context-sensitive softkeys, the 6757i/57i is fully interoperable with leading IP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously.
Part of the Aastra family of IP telephones, the 6757i/57i is ideally suited for executives and heavy telephone users who require more one touch feature keys and a large screen to take full advantage of XML based programs.
Features
- XML Browser - The Aastra 6757i/57i is equipped with XML browser capabilities and an extra large display with dynamic softkeys to easily access customized services and applications. Create internal service applications using development guides available from Aastra. This feature provides unlimited potential to customize the Aastra 6757i/57i to meet your specific business needs or vertical applications using the display and keypad.
- Enhanced Call Management - With extensive storage capacity for personal directories, callers logs and redial lists and 12 programable keys, the Aastra 6757i/57i can improve efficiency by providing more call information with the push of a button. Features such as shared call and bridged line appearances, call forward, call transfer, call waiting, intercom and local 3-way conference increase call flexibility and control.
- Expandability - The Aastra 6757i/57i offers two different module extension options. It supports up to three Aastra 536M modules, each offering 36 keys with LED indicators to create a feature rich attendant console. Or, it will also support up to three of the advanced Aastra 560M modules, each offering 60 keys with a screen based LCD display and LED system.
- Remarkable Audio - All Aastra IP telephones offer full-duplex speakerphone with excellent voice clarity and delivery. With years of experience in telecommunications and telephone design, Aastra can ensure superior voice quality on every product we sell.
- Simplified Deployment - From initial deployment and configuration to future enhancements and upgrades, the Aastra family of IP telephones are designed to save your business time and money. Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup. Easily created configuration files, using any text editor, can be used to configure phones individually or centrally.
Other Supported Makes and Models
We are constantly expanding the range of SIP phones and associated equipment that is fully compatible with the I-Net Hosted PBX platform. Below is a list of equipment that is currently supported. For information on equipment that is not currently listed, please contact us.