KDFresh said:
There is a slight delay, but keep in mind that Nextel uses an old Military RADIO band. This is why the quality sounds like a radio. Verizon Wireless is using an IP server to relay the PTT feature. The delay is minimal (measured in milli-seconds) and is being lowered in due time. The quality is second to none.

Old Military Radio band?? Sorry but you are incorrect. The 800 MHz spectrum has never been used by the military and has always been in use use by Public Safety, CMRS (NEXTEL & Southern Link & others) and private companies for their own internal communications.

NEXTEL is using a modified Motorola 2 way radio SMR technology that is very close to the 2-way radio technology that Public Safety uses in their 800 MHz trunking systems. That's why it is as close to real time as you can get.

Verizion will have a very difficult time in curing the IP latency that they currently have which is between 2 to 4 seconds. It's not the way that they are doing it, it's just inherent in the technology.

Remember, NEXTEL is a 2-way radio provider with a telephone interconnect as a secondary feature. That is why they only advertise PTT in their ads and not their cellular capabilities.

Mark