Hi

I need to measure  DTM digits duration and interdigit delay for various phones in a two stage dialing scenario. I.e Phone dials DID and after answer then the second number

My set-up is:

 Phone->PSTN network->DID(inband DTMF) ->FS

I ha ve FS to answer the call and record the call - all this is fine. 

However when i analyse the rdecording the Digits are being cut off down to 10 msec "bursts" - I trust its FS that cust the DTMF in order to avoid further propogation inband to second leg of the call.

Is theer a way to avoid this ? I.e record the inbound call without DTMF processing ? 

Thx