I’m a SIP newbie: I’m trying to configure a Cisco 1750 with a 2FXS VIC using SIP to establish a call to a UBIQUITY User Agent running on Win XP. I’m also using SIEMENS HiPath RG2200 as a Registrar Server. I’m already able to call from the UBIQUITY UA to the Cisco 1750 FXS ports, but I haven’t been able to call from the Cisco Router to the Ubiquity UA. If anyone has tried a configuration like this please share it with me. I also haven’t been able to get the Cisco Router to register on my Registrar Server, does anyone know which commands I should use to instruct the router to register. THNX A LOT.