MFC/R2 vs ISDN
We have an office in Brazil and it has to call everyday to Spain. The office in Brazil has MFC/R2 and we have ISDN here in Spain. My question is, ¿can the protocol difference slow call initiation? Right now, with MFC/R2 in Brazil, the time elapsing from making the call and receiving the "welcome" message is of about 20 seconds. How much can this be lowered if the line is changed to ISDN?