It really depends on how your system is designed.If you are vocoding all the calls from 8 or 13k voices to 16k and putting them in a PCM (so four in a TCH of 64k), you can calculate it. But some vendors like Lucent technologies is making a packet pipe against some 8/13k calls and putting them in a 2-16DS0 and using it towards the BTS.So it’s a vendor’s choice how to use the TCH for allocating the QCELP.
hi everyone!
i have just completed my engg and have joined the RF Dept of LG Electronics. i would like to knwo how to design a system, given the total number of lines supported by the system and the traffic in erlang/ subscriber.
I have 15 k Subscribers of CDMA2000 1x network. Coverage area needs about 20 BTS.
Services: Voice ~ 75%
Data @ 64 kbps ~ 15%
Data @128 kbps ~ 7 %
Data @>128kbps ~ 3 %
Voice service 0.05Erl/Sub@GoS0.05