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Hersteller: Avaya Dateigröße: 4.74 mb Dateiname: 2757_manual.pdf Unterrichtssprache:

39 3.3.8 Ring Tone Type ........................................................................................................ 39 3.3.9 Voice Codec............................................................................................................. 39 3.3.10 Forward Timer ..................................................................................................... 39 3.3.11 Do Not Disturb ..................................................................................................... 39 3.3.12 Set Time Zone ..................................................................................................... 40 3.3.13 NTP Server Address............................................................................................ 40 3.4 Entry of Call Forward numbers from phone ................................................................. 40 3.5 Phone Book Management............................................................................................ 41 3.5.1 Web Interface........................................................................................................... 41 3.5.2 Phone Interface........................................................................................................ 42 3.6 Browse System Information ......................................................................................... 44 3.6.1 LCD screen .............................................................................................................. 44 3.6.2 Web Interface........................................................................................................... 45 3.7 Change Display Language........................................................................................... 47 3.8 Change Ringer Type .................................................................................................... 48 3.9 Adjust the Contrast of LCD Screen.............................................................................. 49 3.10 Reboot the IP Phone.................................................................................................... 51 3.10 Reboot the IP Phone.................................................................................................... 51 3.10.1 Phone Interface ................................................................................................... 51 3.10.2 Web Interface ...................................................................................................... 52 3.11 Factory Reset............................................................................................................... 53 3 3.11.1 Phone Interface ................................................................................................... 53 3.11.2 Web Interface ...................................................................................................... 54 3.12 Change Password for the Web Interface ..................................................................... 55 4 Troubleshooting .................................................................................................................... 56 5 Firmware Update .................................................................................................................. 57 5.1 Upgrade Procedure...................................................................................................... 57 5.2 Recover from Unsuccessful Firmware Update ............................................................ 58 4 Introduction 1.1 Package Contents Thank you for purchasing the Cortelco 2757 Voice over Internet Protocol (VoIP) phone. The following items should be packed with the 2757. Please contact your dealer if any of them is missing. 2757 Phone (Main Body) 1 pcs Handset 1 pcs Handset Cable 1 pcs Network Cable 1 pcs Desk Stand 1 pcs 1.2 Features The 2757 is a sophisticated, state-of-the-art VoIP phone system. Instead of using conventional phone lines, it uses IP data to make and receive calls over the internet. Here are some of the features of the 2757. • Multi-protocol support: The 2757 supports multiple network protocols for communication and management. Among the protocols supported are TFTP, FTP, RTP, SNTP, HTTP, SIP, DHCP, PPPoE, and Telnet. • Quality of Service (QoS) Support • Headset and speakerphone for hands-free operation. • Standard numeric keypad (0-9, * and #) with built-in DTMF tone generator allowing access to on-line banking services, voice mail systems, etc. • Large, clear display • Ergonomic handset • Five speed-dial keys • Configuration via web browser or telnet • Firmware upgrade via FTP or TFTP • Built-in Ethernet switch: Allows a computer to be connected through the phone. • Silence suppression, echo cancellation, and dynamic jitter buffer for better voice quality. • Caller ID display (where available) • Supports IEEE 802.3af Power over Ethernet (PoE): When connected to a PoE provider, the 2757 can be powered via the Ethernet cab...

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