Before customers use IAD132e with version V100R002B02D059 with static IP adress for Up-link on all IAD and it was work well.
But then they provide new requirement:
1. It need work with dynamic IP adress( by DHCP)
2. MAC adress verification
Current version not suport it, so we upgrate it to V300R001C04, after that it start work with dynamic IP and MAC verification. But after upgrate we catch a problem with one-way audibility.
When user made a call from POTS1 to POTS2 and from POTS2 to POTS1 – all is normal. Both of users can hear each other
But if they try to make a call from POTS1 or POTS2 to external number ( for example to other IAD or AG) or from external number try make a call to POTS1 – User from POTS1 can’t hear opposite site, but opposite site can her him.