GrandStream HT503 1-FXS/1-FXO Port Analog Telephone<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>1 FXS analog telephone ports (RJ11)， 1 PSTN line FXO port， dual 10/100 Mbps ports with integrated NAT router</li><li>Advanced telephony features include caller ID， call waiting</li><li>3-way voice conference， transfer， forward， do not disturb， message indicator， multi-language voice prompts， T.38 fax， flexible dial plan and more</li><li>Supports up to 2 SIP accounts</li><li>Status LED for power， telephone and network ports， and message waiting indication</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41FkjQ-yavL.jpg" noproxy>