We have a few customers doing alarm and credit card over plain old ulaw, and a few doing fax. This works well on the connections where we control the QoS, such as our local Wi-MAX provider (<3ms latency anywhere in the city). On generic connections, fax is mostly unusable and the alarm/card machines get around a 5-10% call failure rate. On 12/9/09 10:29 AM, Lee Riemer wrote:
I've had success using dial-up internet over a voip connection. Latency was 400+ms to the gateway. I wouldn't recommend it as a pleasurable experience, but it worked.
On 12/9/2009 11:14 AM, Carlos Alcantar wrote:
On another note have you do you know if the alarm modem will work over voip? With my experience fax works with t.38 normal modem calls not so well. Hit and miss.
-- Carlos Alvarez TelEvolve 602-889-3003 Advanced phone services simplified