I have to configure multicast (ghost) through unified ip phone 6921. Normally, the whole process should take like 30 to 60 minutes. With the computer behind the phone, it take 8 hours to be complete. Here what I tested :
· Bypassed the phones. I remove the phones to make sure that the computers work correctly. This test was good. I got a normal speed.
· I changed the phones for a 7962. The ghost take the expected time (30 to 60 minutes).
Does the 6921 supports multicasting? If the answer is yes, which firmware do we have to use to resolve this speed issue?
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