Patent ID: 7839985
Filing Date: 2010-11-23
Classification: H04L,H04M

Abstract:
1. A system for a visitor response service in absence including a central server (HNSN) controlling devices and delivering their control states by being connected to a mobile network, and a gateway (RG) which interconnects with said HNSN through network and has connections with a plurality of devices, characterized in that said gateway includes a Tel-Box for setting up a call path with said mobile network in absence said Tel-Box ( a ring signal detection part detecting the number of sounding times of ring signal in the case that a call connection is requested from outside for switching the call path, an on/off hook detection part for detecting on/off hook with residential indoor telephones ( and a switch performing the switching for setting-up a call path between said mobile network and devices, or a mobile network and residential indoor telephones ( a call path to a mobile network is set up using said switch in the case that the number of sounding times of ring signal in said ring signal detection part is more than predetermined number of times in the state that said on/off hook detection part detects on-hook.