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Grandstream HT503
The Grandstream HT503 has a compact size, is easy to use and configure and also delivers excellent voice quality.
The Grandstream HT503 is based on SIP standards and is compatible with almost all SIP-compliant devices, hosted VoIP solutions and software. The HT-503 has one FXS telephone port, one FXO PSTN line port, and two 10M/100Mbps network ports.
The Grandstream HT503 Analog Telephone Adapter will connect a single analog device to VoIP platforms. The compatible devices are things such as:
- Analog phones
- Wireless phones
- Paging systems
- Paging amplifiers
- Modems
- Fax machines
Grandstream HT503 Package Contents:
- Grandstream HT503 ATA
- AC Power Adapter
- Network Cable
- Base Stand
Grandstream HT503 ATA Specifications:
- 1 FXS telephone port (RJ11), 1 FXO PSTN line port (RJ11) with power-outage life line support,
Up to 2 SIP account profiles, SIP over TCP/TLS, SRTP
- Dual 10/100 Mbps network ports (RJ45) with integrated high performance NAT router
- Status LED for power, telephone, PSTN line, network, and message waiting indication
- Advanced telephony features
- caller ID from both IP and PSTN,
- call waiting, 3-way conference with IP and/or PSTN,
- remote call origination and termination from/to PSTN,
- hop-on and hop-off calling,
- transfer to OR forward to IP or PSTN,
- do not disturb, message waiting indication,
- multi-language voice prompts,
- flexible dial plan, direct IP calling
- Comprehensive voice codecs
- Secure and automated provisioning using HTTP/HTTPS/Telnet/TFTP
- Symmetric and asymmetric voice codec/RTP in any call sessions
- T.38 Fax
- SIP over TCP/TLS
- IP connectivity for any phone and fax
- Hop-on/Hop-off calling
- Web management for easy configuration and installation
- Offers traditional and advanced telephony features
- Portable and compact for use at home or on the road
| Features |
HT-286 |
HT-386 |
HT-486 |
HT-488 |
HT-496 |
HT-502 |
HT-503 |
| Ethernet Ports |
1 RJ45 (LAN) |
1 RJ45 (LAN) |
2 RJ45 (LAN/WAN) |
2 RJ45 (LAN/WAN) |
2 RJ45 (LAN/WAN) |
2 RJ45 (LAN/WAN) |
2 RJ45 (LAN/WAN) |
| NAT/Router |
No |
No |
Yes |
Yes |
Yes |
Yes |
Yes |
| DHCP |
Client |
Client |
Client / Server |
Client / Server |
Client / Server |
Client / Server |
Client / Server |
| FXS Port |
1 |
2 |
1 |
1 |
2 |
2 |
1 |
| FXO Port |
No |
No |
No |
Programmable |
No |
No |
1 |
| PSTN Pass-through Port |
No |
Yes |
Yes |
Yes |
No |
No |
Yes |
| Voice Mail Indicator |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
| Voice Codec |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) |
G.711 (a/u-law), iLBC, G.723, G.729A/B, G.726, T.38(fax) (G.729 A/B/E) |
G.711 (a/u-law) Annex | (PLC) and Annex II (VAD/CNG format), G.723.1A, G.729A/B/E, G.726-40/32/24/16, iLBC |
| Remote Configuration |
TFTP/HTTP |
TFTP/HTTP |
TFTP/HTTP |
TFTP/HTTP |
TFTP/HTTP |
TFTP/HTTP |
TFTP/HTTP |
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