We need to establish a connection between CCm release 4.0 and UC 520.
configuration from CCM side: we configure a H323 gateway to go directly to UC520
configuration from UC side: it's a simple dial peer
dial-peer voice 1000 voip
session protocol sipv2
session target ipv4:10.0.100.90
we can call normally from CM to UC, but from UC to CM the call failed.
Could you help on this please.