Hi DuplexcomCEO,
Thx for your answer.
What’s not clear is: if 4 subscribers share a E1 timeslot on Abis and a full E1 timeslot is required per subscriber on A, then to support all potential subscribers on Abis one would need 4 times as many trunks on A than A bis: 64 on Abis => 256 on A.