Abstract: Methods, systems, and computer program products for dynamically controlling a PSTN network element from an IP network element using signaling are disclosed. According to one aspect, a method may include receiving a first SIP message from an IP application server. The first SIP message may identify a call event trigger associated with a subscriber to a circuit switched network. In response to receiving the first SIP message, a first SS7 message identifying the call event trigger and the subscriber may be generated and routed to a circuit switched network node. A second SS7 message may be received that indicates triggering of the call event corresponding to the trigger. A second SIP message indicating the call event may be routed to the IP application server. A third SIP message may be received that specifies a PSTN call control function.