Analog intfc Module on a 6416D+M

[mastromitsos]

Hello , i installed an 100 Analog Intfc Mod on a 6416D+ .
When the digital station rings and i pick-up the call from the analog station , then the speakerphone of the digital station is activated and both parties are heard over the speakerphone .
This also happens when the digital station is idle and i pick up the analog station .The speakerphone is activated and i have to switch the speakerphone off , in order to hear a dialing tone on the analog station .

Any suggestions welcome ,
Thank you in advance