Hardware Features
• Pixel-based display: 128 x 64 monochrome LCD graphical display
• Dedicated illuminated buttons for:
– Audio mute on/off
– Headset on/off
– Speakerphone on/off
• Four-way rocking directional knob for menu navigation
• Voicemail message waiting indicator light
• Voicemail message retrieval button
• Dedicated hold button
• Settings button for access to feature, setup, and configuration menus
• Volume control rocking up/down knob controls handset, headset, speaker,
ringer
• Standard 12-button dialing pad
• High-quality handset and cradle
• Built-in high-quality microphone and speaker
• Headset jack: 2.5 mm
• LED test function
• Two Ethernet LAN ports with integrated Ethernet switch: 10/100BASE-T
RJ-45
• 5 VDC universal (100-240V) switching included
Regulatory Compliance
• FCC (Part 15, Class B) , UL, CE Mark, A-Tick
Security Features
• Password-protected system, preset to factory defaults
• Password-protected access to administrator and user-level features
• HTTPS with factory-installed client certificate
• HTTP digest: encrypted authentication via MD5 (RFC 1321)
• Up to 256-bit Advanced Encryption Standard (AES) encryption
Documentation
• Quick-start installation and configuration guide
• User guide
• Administration guide
• Provisioning guide (for service providers only)
Package Contents
• Cisco SPA 303 IP phone, handset, and stand
• Handset cord
• RJ-45 Ethernet cable
• Power adapter
• Quick installation guide
• CD
|
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 μ-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) |
220 x 198 x 30 mm |
|
Unit weight |
0.68kg |
| |
|
