Colin,
The hardest thing to do is ask the right question. I notice that most of the time, when facing an issue, I want to send an email to our tech support. And while writing the question with all details, I can already find the answer myself :))
27 erlangs on 29 TCH is possible, but your congestion rate must be very high ? How high is it ?
>>> Bijoy, the erlang B gives the “offered” traffic, not “carried” traffic, it is very confusing to apply the erl B formula on the actual measurement of the traffic. The measurement gives the “carried” traffic.
I stop here because I can feel the headache already…
Cheers,