If the PTT drops off a full E1 Structured/G.704 circuit with either a X.21 or V.35 interface for me to use---can I plug that directly into a CSU/DSU or Channelized E1 card. Will either of those or both of them take either of those serial interface handoffs?
The reason I ask is because I will only need to utilize time slots 1-8, not the full E1, even though the PTT is giving me the whole E1--so I need to be able to take the X.21 at one site and V.35 at another site and plug that into something to break it down to the appropriate port size.