Specifications
Model
Data Networking
Voice Gateway
Provisioning,
Administration &
Maintenance:
Power Supply
Physical Interfaces:
Indicator Lights/LED:
SPA-941
* Note: Many specifications are programmable within a defined range or list of options.
MAC Address (IEEE 802.3)
IPv4 - Internet Protocol v4 (RFC 791) upgradeable to v6 (RFC 1883)
ARP - Address Resolution Protocol
DNS - A Record (RFC 1706), SRV Record (RFC 2782)
DHCP Client - Dynamic Host Configuration Protocol (RFC 2131)
ICMP - Internet Control Message Protocol (RFC792)
TCP - Transmission Control Protocol (RFC793)
UDP - User Datagram Protocol (RFC768)
RTP - Real Time Protocol (RFC 1889) (RFC 1890)
RTCP - Real Time Control Protocol (RFC 1889)
DiffServ (RFC 2475), Type of Service - TOS (RFC 791/1349)
VLAN Tagging 802.1p/q - Layer 2 QoS
SNTP - Simple Network Time Protocol (RFC 2030)
SIPv2 - Session Initiation Protocol Version 2 (RFC 3261, 3262, 3263, 3264)
SIP Proxy Redundancy - Dynamic via DNS SRV, A Records
Re-registration with Primary SIP Proxy Server
SIP Support in Network Address Translation Networks - NAT (including STUN)
SIPFrag (RFC 3420)
Secure (Encrypted) Calling via Pre-Standard Implementation of Secure RTP
Codec Name Assignment
Voice Algorithms:
- G.711 (A-law and µ-law)
- G.726 (16/24/32/40 kbps)
- G.729 A
- G.723.1 (6.3 kbps, 5.3 kbps)
Dynamic Payload Support
Adjustable Audio Frames Per Packet
DTMF: In-band and Out-of-Band (RFC 2833) (SIP INFO)
Flexible Dial Plan Support with Inter-Digit Timers
IP Address / URI Dialing Support
Call Progress Tone Generation
Jitter Buffer - Adaptive
Frame Loss Concealment
VAD - Voice Activity Detection with Silence Suppression
Attenuation / Gain Adjustments
MWI - Message Waiting Indicator Tones
VMWI - Voice Mail Waiting Indicator - Via NOTIFY, SUBSCRIBE
Caller ID Support (Name and Number)
Third Party Call Control (RFC 3725)
Integrated Web Server Provides Web Based Administration and Configuration
Telephone Key Pad Configuration via Display Menu / Navigation
Automated Provisioning and Upgrade via HTTPS, HTTP, TFTP
Asynchronous Notification of Upgrade Availability via NOTIFY
Non-intrusive, In-Service Upgrades
Report Generation and Event Logging
Statistics Transmitted in BYE Message
Syslog and Debug Server Records - Configurable Per Line
Switching Type (100-240v) Automatic
DC Input Voltage: +5 Volts DC at 2.0 Amps Maximum
Power Consumption: 5 Watts
Power Adapter: 100-240v - 50-60Hz (26-34VA) AC Input, 1.8m cord
1 10baseT RJ-45 Ethernet Port (IEEE 802.3)
Handset: RJ-7 Connector
Built-in Speakerphone and Microphone
Headset 2.5 mm Port
Four (4) Call Appearance/Line Buttons with Associated Tricolor LED
Line LED State Indication: Active, Idle, On Hold, Unregistered
Speakerphone On/Off Button with LED
Headset On/Off Button with LED
Mute Button with LED
Message Waiting Indicator LED
Voicemail Message Retrieval Button
Hold Button
LED Test Function
SPA941
Model No.
PRODUCT DATA
