Data Sheet
© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 4 of 7
Security Features
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Password-protected system, preset to factory defaults
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Password-protected access to administrator and user-level features
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HTTPS with factory-installed client certificate
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HTTP digest: encrypted authentication via MD5 (RFC 1321)
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Up to 256-bit Advanced Encryption Standard (AES) encryption
Documentation
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Quick-start installation and configuration guide
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User guide
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Administration guide
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Provisioning guide (for service providers only)
Package Contents
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Cisco SPA 303 IP phone, handset, and stand
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Handset cord
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RJ-45 Ethernet cable
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Power adapter
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Quick installation guide
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CD
Specifications
Table 1 gives specifications for the Cisco SPA 303 3-Line IP Phone.
Table 1. Specifications for the Cisco SPA 303 3-Line IP Phone
Note: Many features are programmable within a defined range or list of options. Please see the SPA Administration
Guide for details. The target configuration profile is uploaded to the SPA 303 at the time of provisioning.
Description Specification
Data networking
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MAC address (IEEE 802.3)
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IPv4 (RFC 791)
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Address Resolution Protocol (ARP)
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DNS: A record (RFC 1706), SRV record (RFC 2782)
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Dynamic Host Configuration Protocol (DHCP) client (RFC 2131)
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Internet Control Message Protocol (ICMP) (RFC 792)
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TCP (RFC 793)
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User Datagram Protocol UDP (RFC 768)
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Real Time Protocol RTP (RFC 1889, 1890)
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Real Time Control Protocol (RTCP) (RFC 1889)
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Real Time Control Protocol – Extended Report ( RTCP-XR) ( RFC 3611 )
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Differentiated Services (DiffServ) (RFC 2475)
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Type of service (ToS) (RFC 791, 1349)
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VLAN tagging 802.1p/Q: Layer 2 quality of service (QoS)
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Simple Network Time Protocol (SNTP) (RFC 2030)
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