Cisco SPA 303 G2 3-Line IP Phone with Display and PC Port

Technical Specifications

Data networking

MAC address (IEEE 802.3)

IPv4 (RFC 791)

Address Resolution Protocol (ARP)

DNS: A record (RFC 1706), SRV record (RFC 2782)

Dynamic Host Configuration Protocol (DHCP) client (RFC 2131)

Internet Control Message Protocol (ICMP) (RFC 792)

TCP (RFC 793)

User Datagram Protocol UDP (RFC 768)

Real Time Protocol RTP (RFC 1889, 1890)

Real Time Control Protocol (RTCP) (RFC 1889)

Real Time Control Protocol - Extended Report ( RTCP-XR) ( RFC 3611 )

Differentiated Services (DiffServ) (RFC 2475)

Type of service (ToS) (RFC 791, 1349)

VLAN tagging 802.1p/Q: Layer 2 quality of service (QoS)

Simple Network Time Protocol (SNTP) (RFC 2030)

Voice gateway

SIP version 2 (RFC 3261, 3262, 3263, 3264)

SPCP with the Cisco Unified Communications 500 Series

SIP proxy redundancy: dynamic via DNS SRV, A records

Re-registration with primary SIP proxy server

SIP support in NAT networks (including STUN)

SIPFrag (RFC 3420)

Highly secure (encrypted) calling via Secure Real-Time Transport Protocol (SRTP)

SIP/TLS

Codec name assignment

Voice algorithms:

G.711 (A-law and ?-law)

G.726 (16/24/32/40 kbps)

G.729 AB

G.722

Dynamic payload support

Adjustable audio frames per packet

Dual-tone multifrequency (DTMF), in-band and out-of-band (RFC 2833) (SIP INFO)

Flexible dial plan support with interdigit timers

IP address/URI dialing support

Call progress tone generation

Jitter buffer: adaptive

Frame loss concealment

Voice activity detection (VAD) with silence suppression

Attenuation/gain adjustments

Message waiting indicator (MWI) tones

Voicemail waiting indicator (VMWI), via NOTIFY, SUBSCRIBE

Caller ID support (name and number)

Third-party call control (RFC 3725)

Provisioning, administration, and maintenance

Integrated web server provides web-based administration and configuration

Telephone keypad configuration via display menu/navigation

 Automated provisioning and upgrade via HTTPS, HTTP, TFTP

Asynchronous notification of upgrade availability via NOTIFY

Nonintrusive in-service upgrades

Report generation and event logging

Statistics transmitted in BYE message

RTCP-XR

Syslog and debug server records: configurable per line

Power supply

Switching type (100-240V) automatic

DC input voltage: +5 VDC at 1.0A maximum

Physical interfaces

Two 10/100BASE-T RJ-45 Ethernet ports (IEEE 802.3)

Handset: RJ-9 connector

Built-in speakerphone and microphone

Headset 2.5-mm port

Indicator lights/LED

Speakerphone on/off button with LED

Headset on/off button with LED

Mute button with LED

Message waiting indicator LED

LED test function

Dimensions (W x H x D) 8.66 x 7.80. x 1.18 in. (220 x 198 x 30 mm)

Unit weight 1.50 lb ( 0.68kg)

Operating temperature 32º ~ 113ºF (0º ~ 40ºC)

Storage temperature -13º ~ 185ºF (-20º ~ 70ºC)

Operating humidity 5% to 95% noncondensing

Storage humidity 5% to 95% noncondensing