Avaya 4690 issue

[keati1]

Hello

I have a Avaya 4690 IP phone, that sporadically when you call someone, they can hear you but you cannot hear the receiving party. Is this a hardware problem or firmware?

Thanks

[junis]

Hello

I have a Avaya 4690 IP phone, that sporadically when you call someone, they can hear you but you cannot hear the receiving party. Is this a hardware problem or firmware?

Thanks

Need more information..

[havel3]

ip routing, it is always the same...