Second call gets busy signal

[Highspeed]

I have a customer who is having an issue with the second incoming call to sets. They have a set that has many multilines on their phone. When that phone is on a call, the next call coming in hears a busy signal. This is happening on some more phones throughout their facilities. However, there are some phones that are working correctly. When comparing the phones that can take a second call against the phones that cant, their profiles, Access COS, Phone Feature COS and Dynamic State User build out are all the same.

Any suggestions?

[tot3nkopf]

During call modify call waiting status. User probably used call wait dynamic key disabling call waiting.

[Highspeed]

I am sorry but I didnt understand your reply

[tot3nkopf]

I am sorry but I didnt understand your reply

Push the "wait" dynamic key during one call. Then call again from two sources and see if the second call rings.

[Highspeed]

We dont have "wait" keys on the phones in the US