hi
i face problem regarding ip calls , i have os 7200 v 4.98 with os card v 2.10 , i install 2 smt ip phone , when i making calls from ip station to ip every thing work good , but when making call from ip phone to digital station or to single , on way speech occurs
i upgrade the system to v 5.01 the same problem , then i use non samsung ip phone , the same issue , can i get any support here

You'll need to enable the mgi channels.on the oas card.
They aren't enabled by default.
Ip phone to ip phone talks direct.
Ip to non ip (eg digital phone, pri line, posts line) required a mgi channel to do the conversion from ip to tdm and vice versa.

thanks for your response
can you guide me how to enable MGI channel on OAS card
i check the manual but there's NO thing like this

sorry but if you mean
service select i choose MG-16CH

That's the one.
Are the phones local or remote?
If local are they in the same subnet as the mp20/oas card?
What slot in which cabinet is the oas card installed?

local phones , in the same subnet mask
first time i install OAS card in slot 1 in main cabinet and left slot 3& 4 blank , when i notice the problem i change the
location to slot 3

When you move a card you need to reprogram it in the new slot, and deprogram it from the old slot.

You'll also need to assign the mgi channels once you've ended them into the required groups.

i did that buy without any useful , In OAS card led SVC2 turned off , in service manual if SVC2 off ......check setting status of MMC 858 and assign MFR channel ,
Can you help me with this ????