Cortelco 2747 user manual

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oGets IP from DHCP server using DHCP protocol or through ADSL modem using PPPoE protocol, automatically reconnects when PPPoE loses connection.

•Pass through NAT devices:

oCan make outgoing and incoming calls under any NAT device (even under two layer NAT devices) when working with the specific gatekeeper/proxy device.

•Remote software upgrade capability (via ftp):

oFTP protocol provides reliable remote upgrade via Internet.

•Advanced Digital Signal Processing (DSP) technology to ensure superior audio quality:

oHardware System on a Chip solution with built in DSP processor ensures perfect voice quality.

•Supports G.723.1, G.729A/B, G.711 (A-law/U-law) voice codecs :

oFollows ITU-T standard for best compatibility.

•Supports supplementary services, including immediate (unconditional) call forwarding, busy call forwarding, no answer call forwarding and call hold/transferring.

•Provides call history:

oRecords incoming call history, outgoing call history, missed (not accepted) call history, and lets users make a direct call from the call history log.

•Phone Book : 50 entries

•Speed dial : 10 entries

•Supports Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation) :

oSilence suppression can save about half of the network bandwidth needed during normal VoIP conversation.

•Ping function supported :

oPings another device on the Internet from the VOIP 2747 to make sure the Internet connection is ok.

•System status display on the LCD panel :

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Contents Voip IP Phone Configuration from Keypads Configuration on WEB Phone Book and Speed Dial Key Features Overview IntroductionPage Page Hardware Specification Hardware SpecKey parts of the Voip 2747 series IP Phone Rear and Back side Panel of the Voip Rear Panel of the IP PhoneLCD Display Keypad DefinitionLight UP Key+OUT VOL Down KeyVOL+ NETTXT ←→ NUM CancelMenu / OK Transfer See Section Redial / DialSpeed Dial M1 M10 Phone BookLCD Menu List ¾ SIP Page Page Installation Environment Configuration from Keypads Network ConfigurationDynamic IP Method Dhcp PPPoE Method Static IP MethodRegistration to GK / Proxy Server Registration to a gatekeeper H.323 versionRegistration to a proxy server SIP version Page Registration / Startup message Page Page Call Forward Configurations Immediate ForwardBusy Forward Configurations under View itemView current network settings No Answer ForwardRestart Packet Trace for signal monitoringAdvanced Configuration Display current software versionWeb Configuration ƒ Username root ƒ PasswordOthers Network Configuration on webBasic MAC Address1 H.323 Parameters H.323 Configuration on webForward Mode Time ZoneMin Media Port SIP Configuration on webAdvanced Max Media PortReg To SIP ParametersReg From Reg ExpirePrefix Phone Configuration on webRing Volume VoiceCodecTxGain Handset VolumeHandfree Volume Ring TypeSystem Configuration BG Noise LevelCall Functions Making Calls Receiving CallsCheck call history incoming / outgoing / missed calls Call Transfer RedialCall Forward Ringing Transfer1.1 Add Call HoldPhone Book and Speed Dial EditSpeed Dial Speed Dial View SettingsSpeed Dial Change Settings Attachment H.323 Interoperability ListGateKeeper GatewayProxy Server SoftSwitchSIP Interoperability List Trunking GatewayLimited Warranty