System Integration
System integration is the way of putting together all the smaller parts called „subsystems” into one big system and ensuring that everything functions successfully together as a system.
The selective call acceptance allows controlling incoming calls by making a list of telephone numbers which you are ready to accept. But incoming calls from subscribers that are not listed are directed to the answering machine by which the caller is informed that you do not accept calls at the moment.
ZamZam Telecom
International VoIP Wholesale Provider,
Internet Telephony Service Provider,
PC to Phone, Phone To PC, Phone To Phone, Termination
Top countries:
United States 1294
India 440
United Kingdom 425
Canada 348 Bangladesh 338
China 142
Pakistan 134
Australia 133
Spain 123
Russia 114View all countries