Hello,
I have followed the instructions as per the manual. http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/csbpipp/ip_phones/user/guide/525g_sip_user_guide_source/spa525_sip_user.pdf page 46.
When I hit the Conf Button the 2nd time, it puts the 2nd party on hold. i tried multiple times. Both numbers are external numbers i.e. not internal shortcodes extensions. Thanks for any advice.
STEP 1 Press the Conf button during an active call. The first call is placed on hold, a second line is opened, and you hear a dial tone. STEP 2 Dial the second person’s telephone number. STEP 3 Press the Conf button again. All three parties are connected in the conference call.
