On the xdadeveloper site, acegolfer indicates he was using tmobiles 3g network rather than their 4g network. Perhaps that explains his poor voice quality issues.
On the xdadeveloper site, acegolfer indicates he was using tmobiles 3g network rather than their 4g network. Perhaps that explains his poor voice quality issues.
Plan for the worst case scenario, and hope for the best.
I consider Tmo HSPA+ network as 3g not 4g. Tmo 4g is just a marketing gimmick.
It's not the speed but the packet loss that degrades VoIP call quality. HSPA+ cannot consistently sustain 128kbps throughput in real time (required for ulaw 2-way signal).
