"..To be clear, IMS did not solve AT&T’s network coverage problems in NYC; building out a decent radio network solved that. But it does highlight that Telcos cannot simply offer ONLY the best effort experience of say Skype, where voice gets garbled or the line goes blank and then the voice comes back again but a couple of sentences have been lost. BUT for some customers and some conversations this is clearly acceptable, given the volume of traffic Skype represents internationally, over one third of voice traffic and near 100% of consumer video telephony traffic.
Also there are lots of scenarios where a call starts on 4G and then needs to drop to 3G. Unless a telco makes the simplifying assumption that 4G works everywhere, which as a Verizon customer is not yet the case on its network. This complex network scenario IMS solves so communications just work..."
IMS and IP Communications, Two Different World Views?
Also there are lots of scenarios where a call starts on 4G and then needs to drop to 3G. Unless a telco makes the simplifying assumption that 4G works everywhere, which as a Verizon customer is not yet the case on its network. This complex network scenario IMS solves so communications just work..."
IMS and IP Communications, Two Different World Views?