What ISDN timer is started after Q.931 SETUP msg is sent? networkmanagers 13 years ago What ISDN timer is started after Q.931 SETUP msg is sent? A.T301 B.T303 C.T302 D.T310 E.T305 Explanation:http://www.net.com/support/manuals/html/isdnx/prsw601/prsw_33.html ← Previous question Next question →