SIP IP Phone
VIP-256T
11
Specifications
Product
VIP-256T
SIP IP Phone
Hardware
Lines (Direct Numbers)
2-Line Enterprise-class IP phone
Display
128x32 Graphic LCD with White Backlight
Feature Keys
2 Line Keys and 4 Soft Keys
12 Dialing Buttons (0~9, *, #)
9 Fixed Function Buttons
10 Multi-functional Key with Dual-Color LED
Physical Interfaces
Two 10/100BASE-T RJ-45 Ethernet Ports (IEEE 802.3)
Handset: RJ-9 Connector
Built-in Speakerphone and Microphone
Protocols and Standard
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)
Differentiated Services (DiffServ) (RFC 2475)
Type of Service (ToS) (RFC 791, 1349)
VLAN Tagging 802.1p / 802.1Q: Layer 2 Quality of Service (QoS)
Simple Network Time Protocol (SNTP) (RFC 2030)
Backward Compatible with RFC 2543
Session Timer (RFC 4028)
SDP (RFC 2327)
NAPTR for SIP URI Lookup (RFC 2915)
Voice Gateway
SIP Version 2 (RFC 3261, 3262, 3263, 3264)
SIP supported in NAT Metworks [including STUN (RFC 3489)]
Message Waiting Indicator (RFC 3842)
Voice Algorithms:
- G.711 (A-law and
μ
-law)
- G.726 (16/24/32/40 kbps)
- G.722
- G.723
Dual-Tone Multi-Frequency (DTMF), In-Band and Out-of-Band (RFC 2833) (SIP
INFO)
Voice Activity Detection (VAD) with Silence Suppression
Adaptive Jitter Buffer Management
Comfort Noise Generation
Echo Cancellation Message
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
User Authentication for Configuration Pages
Local and Remote Syslog (RFC 3164)
SNTP Time Synchronization
Multi User Level
SNMP v2
TR069
Features
Telephony Features
Two Voice Lines
Call Waiting
