This is Debbie from VOPTech, a VoIP hardware supplier located in China.
Now I'd like to recommend our VI2006 IP Phone to you, this model support 2 SIP lines or 1 IAX2 line, with 2RJ45 ports. USD31.99 for sample, discount is available if you need large quantity.
If you have any interests in it, contact me at email@example.com. SKype: debbie_voptech.
Thanks & Warmest Regards