Dear Wassim!
As Wissal said, OSN3500 fully supports the connection with AR2200.
There are usually three ways to connect between them:
1. The OSN3500 is connected to the E1 port of the AR2200 (coaxial cable) through the PDH board. The speed of this connection method is low, only 2Mbit/s.
2. The OSN3500 is connected to the POS/CPOS port of the AR2200 (optical fiber) through the SDH board. The speed of this connection is a little higher, usually 1552Mbit/s or 6222Mbit/s.
3. The OSN3500 is connected to the AR2200's GE port (optical fiber) through the EoS board. The maximum rate of this connection is 1Gbit/s.
Thank you!