I have a network with 1760 voice router. These are gateways to the pstn network.
I have to upgrade the IOS to support SG3 fax speed. With the software advisor I found the
one software: 12.4(15)T7 that supports this
Now I have periodical erros with following message:
ISDN BR3/1 **ERROR**: L3_GetUser_NLCB: DUPLICATE SETUP, message ignored.
I thought, this caveats is resolved in Cisco IOS Release 12.4(15)T3 with CSCsm31235, but it seems so not.
who can help me ?