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| Item number: CIEN4-6713758 Manufacturer no.: 700476849 EAN/GTIN: n/a |
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![](/p.gif) | Designed for walk-up users in building lobbies and other public spaces, the 1603 supports three line appearances/feature keys, each with dual LEDs to show status. Fixed feature keys include conference, transfer, drop, hold, mute and a 2-way speakerphone. More information: Power | Power over Ethernet (PoE) | Yes | Ports & interfaces | Ethernet LAN (RJ-45) ports | 1 | ![](/p.gif) | Headphone outputs | 1 | Network | Ethernet LAN | Yes | ![](/p.gif) | Supported network protocols | H.323 | Audio | Speakerphone | Yes | ![](/p.gif) | Microphone mute | Yes | ![](/p.gif) | Voice codecs | G.711, G.726 | Design | Product type | IP Phone | ![](/p.gif) | Product colour | Black | ![](/p.gif) | Handset type | Wired handset | ![](/p.gif) | Wall mountable | Yes | ![](/p.gif) | Mounting | Desk/Wall | Management features | Keypad number of keys | 12 | Packaging content | Number of handles included | 1 pc(s) | Phone features | Call hold | Yes | ![](/p.gif) | Conference call | Yes | ![](/p.gif) | Redialing | Yes | Other features | Minimum system requirements | Communication Manager 3.0 + IP Office 4.2 (11) + | Certificates | Certification | HTTP |
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