Hi, All!Our equipment:Nortel Meridian 1 option 11&cisco 2620 with NM-HDV+VWIC-MFT E1.M1/11 connected with 2620 by E1 CAS R2.Test scheme:--------------Phone1--M1/11-E1 CAS R2-2620+NM-HDV+MFT--LAN--5350--E1 PRI--M1/81--Phone2 During the call from phone...