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Product Specification
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Overview
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Grandstream HT-503 อุปกรณ์ IP Analog Telephone Adapter (ATA) 1 FXS, 1 FXO, Integrated NAT router, 2 Port Lan 10/100Mbps, รองรับ T.38, 2 SIP Account
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Telephone Interfaces
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1 FXS telephone port (RJ11), 1 FXO PSTN line port (RJ11) with lifeline support
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Network Interfaces
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Two (2) 10/100Mbps ports (RJ45) with integrated NAT router and auto-detection
and support for either straight through or crossover cables
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LED Indicators
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Power,WAN, LAN, PHONE and LINE
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Factory Reset Button
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Yes
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Telephony Features
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Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference
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Voice Codecs
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G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1A, G.729A/B/E, G.728, G.726-40/32/24/16, iLBC
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Voice over Packet Capabilities
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Voice Activity Detection (VAD) with comfort noise generation (CNG) and packet loss concealment (PLC), dyanmic jitter buffer, G.168 compliant line echo cancellation
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Fax Over IP
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T.38 compliant Group 3 fax relay up to 14.4kbps, Fax datapump V.17, V.19, V.27ter, V.29 for T.38 fax relay
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Short/Long Haul Ring Load
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REN 3: Up to 150 ft on 24 AWG lines
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Caller ID
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Bellcore type 1 & 2, ETSI, BT, NTT and DTMF-based CID
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Disconnect Methods
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Polarity Reversal/Wink
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DHCP Serve/Client NAT Router
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Yes, can operate in NAT router or switched mode
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Network Protocols
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TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, PPPoE, STUN
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QoS
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Layer 2 (802.1Q VLAN/802.1p) and Layer 3 (ToS, Diffserv, MPLS)
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DTMF Method
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RFC2833 and/or SIP INFO
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Provisioning and Control
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UPnP, HTTP, HTTPS, TELNET, TFTP, TR069, secure and automated provisioning using AES encryption, syslog
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Media
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SRTP
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Control
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TLS/SIPS/HTTPS
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Management
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Syslog support, telnet, remote management using web broswer
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Universal Power Supply
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Input: 100-240VAC, 50-60Hz
Output: 12V VDC, 0.5A
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Environmental
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Operational: 32? ~ 104?F or 0? ~ 40?C;
Storage: -10 ~ 130?F
Humidity: 10 - 90% non condensing
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