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Cortelco’s high standards of quality and performance

are the showcase in our new multi-line 2757 VoIP 

telephone.  This offers businesses a cost effective 

alternative for their PBX type features and operation

with a user friendly web based GUI interface, designed

to facilitate a simple transition into the world of Voice

over IP.  Our 2757 comes standard with a 2.75 in. x 1.5

in. Dot Matrix Liquid Crystal Display, Speakerphone and

headset jack and supports up to two (2) active lines.

At Cortelco, we understand the importance of interoperability.

Our 2757 has undergone extensive inoperability testing and

has been SIP Verified to Cisco Unified Call Manager

TM

5.1 by

tekVizion

TM

Labs.

To view the Press Release for the tekVizionVerification,

simply go to: http://www.cortelco.com/pdf/2757pr.pdf

Stylish, functional and cost effective, the 2757 is ideal for

Hosted VoIP, IP PBX and IP Centrex applications.

Redial

Caller ID

Message Waiting  Indicator

5 One-Touch Memory Keys

LCD : Dot Matrix (2.75in x 1.5in)

● 

4 soft-buttons, plus Navigation Button

Multi-line (4-line appearance buttons with LED’s)

Hold

DND

Call Transfer

Call History

Phonebook

3-Way Conference

Call Forward

Headset Compatible

Audible and Visual Ring Signal

Adjustable Ringer Volume

Handset Volume  Control

2-Position Phone Stand

Optional AC  Power Adapter

FEATURES 

(standard)

Web based GUI Setup

PoE (Power-Over-Ethernet, IEEE 802.3af)

WAN Port: 1 x RF45 10/100 Base-T Ethernet,

line auto-sensing/switching.

PC Port: 1 x RJ45 10/100 Base-T Ethernet, line 

auto-sensing/switching

● 

Multi-protocol support:TFTP, RTP, SNTP, HTTP,

SIP, DHCP, PPPoE, and Telnet.

QoS Support

STUN Support

5-Selectable Ringer Cadences

Complies with RFC-3261, SIP standard

Dynamic IP support (DHCP and PPPoE)

Supports G.723.1, G729A/B, G.711 voice codecs

Remote software upgrade capability (via FTP or TFTP)

FEATURES 

(advanced)

Cortelco • 1703 Sawyer Road  •  Corinth, MS 38834  •  Tel: 800-288-3132  •  Fax: 662-287-3889  •  www.cortelco.com

FEATURES AND SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

2757

V

o

IP

Telephone

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