What is the coverage of PTT and can it operate across a WAN?
The transmission coverage of the SpectraLink i640 wireless telephones is entirely dependent on the wireless LAN coverage, whether a standard PABX call is made or the PTT mode is utilized. The PTT mode is a wireless telephone feature and, as such, is subject to the same topology and quality of service considerations required by the SpectraLink i640 wireless telephones for proper operation with a telephony switch.