They're more reliable than calls made over the internet, says an expert in the wake of a Singtel landline disruption.
They're more reliable than calls made over the internet, says an expert in the wake of a Singtel landline disruption.
Newer, more hi-tech alternatives like Voice over Internet Protocol can be found in the digital phone line services offered by local telcos.This infrastructure uses packet switching, said Asst Prof Purnima. It means data is broken down into smaller packets and transmitted through the network.When there is high congestion on the network - such as at a concert where many people in the same area might be trying to send messages at the same time - there'll be a lag in the transmission of data.
Mr Oo Gin Lee, managing director of a tech-focused public relations company, added that landlines are always connected whereas mobile phones depend on last-mile wireless connectivity. There seemed to be a lack of contingencies in that case, he said, and similarly so in this week's disruption.
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