Voice Feature >>

• G.722, G.711 a/μ-law, G.729A/B, G.726, G.723.1 GSM 6.10 Full Rate, iLBC 13.3 kbps
• DTMF Detection and Generation
• Silence Suppression & Detection
• Comfort Noise Generation (CNG)
• Voice Activity Detection (VAD)
• Echo Cancellation (G.165/G.168)
• Adaptive (Dynamic) Jitter Buffer
• Call progress tone detection (FXO) and generation (FXS)
• Auto or Programmable Gain Control
• Inbuilt Local Mixer ( upto two channels)
• ITU-T V.152 Voice-band Data over IP Networks

SIP Method Support >>

ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PING, PRACK, PUBLISH, REFER,
REGISTER, SUBSCRIBE, UPDATE

SIP Call Features >>

• Peer to Peer Call
• Call Hold / Retrieve
• Call Waiting
• Call Pick Up
• Call Park / Retrieve (SIP Server Required)
• Call Forward - unconditional, busy, no answer
• Call Transfer - attended, unattended
• Do Not Disturb
• Speed Dialing
• Repeat Dialing
• Three-way Calling
• MWI (RFC-3842)
• Hot Line and Warm Line

Telephony Specifications >>

• In-Band DTMF, Out-of-Band DTMF Relay (RFC2833 or SIP INFO)
• DTMF / PULSE Dial Support
• Caller ID Generation / Detection:
　DTMF
　FSK-Bellcore Type 1 & 2
　FSK-ETSI Type 1 & 2
　FSK-NTT
　FSK: Calling Name, Number, Date and Time, VMWI
• FXS metering pulse:
　Polarity Reversal
　12kHz calling tone
　16kHz calling tone
• Polarity Reversal Detection (FXO) and Generation (FXS)
• T.30 FAX Bypass to G.711, T.38 Real Time FAX Relay
• Failsafe mechanism: FXS auto or manual relay to FXO /PSTN through hardware relay or
　internal PCM Bus while Network, Service or power failure occurs
• ROH Tone (Receiver Off-Hook Tone @ 480 Hz)
• Loop Current Suppression

SIP Call Management >>

• Support Outbound Proxy
• SIP Registration Failover Mechanism
• Group Hunting
• Privacy Mechanism / Private Extensions to SIP
• Session Timers (Update / Re-invite)
• DNS SRV Support
• Call Types: Voice / Modem / FAX
• User Programmable Dial Plan Support
• Automatic Calling Number Manipulation
• CDR Client
• Manual Peer Table (for P2P calls)
• E.164 Numbering, ENUM support

SIP Account Management >>

• By port registration
• By device registration (share account)
• Mixed mode (Hunt number for inbound, by port number for outbound)
• Invite with Challenge
• Register by SIP Server IP Address or Domain Name
• Support RFC3986 SIP URI format

Physical interface >>

• WAN : 1 x 100 baseTx , auto cross-over, auto speed negotiation, RJ-45 connector
• LAN : 1 x 100 baseTx, auto cross-over, auto speed negotiation, RJ-45 connector
• Telephone : 2FXS 1PSTN, 2 FXS port or 1 FXS 1 FXO port
• Factory default reset button, Power jack
LED Indicators >>
• SP300DS : Power, Register, Phone 1, Phone 2, WAN, LAN
• SP300SO : Power, Register, Phone, Line, WAN, LAN
• SP300DP : Power, Register, Phone 1, Phone 2, Line, WAN, LAN

NETWORK FEATURES AND MANAGEMENT...............................................................

IP Network Specifications >>

• WAN: Static IP, PPPoE, DHCP
• Network Protocol Support:
　IP, TCP, UDP, TFTP, FTP, RTP, RTCP, ARP,RARP, ICMP, NTP, SNTP, HTTP, HTTPS, DNS,
　DNS SRV, Telnet, DHCP Server, DHCP Client, STUN Client, UPnP, IGMP, IGMP snooping,
　IGMP proxy, RTSP ALG
• NAT Functions
　Support up to 255 Clients
　Port Forwarding (Virtual Servers)
　DMZ
　Port Triggering
• Support IPv4, IPv6 future upgradeable
• QoS Support:
　WAN: DiffServ, IP Precedence
　　　　Priority Queue
　　　　Rate Control
　　　　802.1Q (VLAN Tagging), 802.1p (Priority Tag)
　　　　LAN: Rate Limit
• DDNS Support
　Dyndns.org (Dynamic and Custom)

Network Security Specifications >>

• PPTP Client
• DIGEST Authentication
• MD5 Encryption
• DoS Protection

Router Management >>

• Web Based Configuration
• Auto-provisioning (HTTP / HTTPS)
• Telnet
• IVR
• FTP / TFTP / HTTP Software Upgrade
• Configuration Backup and Restore
• Reset to Default Button
• TR-069/104
• SNMP V3/ V2c/ V1