Aastra 6757i

The Aastra 6757i 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 is fully interoperable with leading IP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously.


The Aastra 6757i supports up to 3 Aastra M670i or M675i expansion modules



23.5 cm W x 20.8 cm D x 8.0 cm H (9.3”W x 8.2”D x 3.2”H)
940 g (33.0 oz)
AC adapter (48V DC) included
Integrated IEEE 802.3af Power Over Ethernet (PoE) support
Aastra Hi-QTM Audio Technology***
Hearing aid compatible (HAC) handset
Full-duplex quality speakerphone
Codecs: G.711 μ-law / A-law, G.729, G.722 wideband, BV16, BV32, L16
144x128 pixels graphical backlit LCD display
Soft white backlight for user comfort in any lighting environment
User and administrator level passwords for login
Encryption of configuration files
Display control based on user actions or on events
Dynamic Phone Configuration
Dual 10/100 Mbps switched Ethernet ports
Manual or Dynamic Host Configuration Protocol (DHCP) IP address setup
Support of multiple DHCP options: 66, 60, 43, 77, 159, 160
Time and date synchronization using SNTP
Quality of Service (QOS) support – IEEE 802.1 p/Q VLAN and priority tagging, Type of Services (TOS), and Differentiated Services Code Point
IETF SIP (RFC3261) and associated RFCs
Multi-lingual support – English, French, Spanish, Italian, German
Supports up to 3 M670i (536M)**** or M675i (560M)****modules