When I phone a landline from my Sipgate line my number doesn't come up on\ntheir caller display. When I phone a mobile the number is displayed. Any\nideas why this would be? In my router I have an option for caller ID\nmodulation this is currently set to CID_V23 but I have the option of\nchanging it to CID_BELL202. Will changing this make any difference? Sorry\nfor being thick but I'm fairly new to VOIP that isn't an out of the box set\nup.