i got ccm 4.1.3 and fxo ports connected fct's for gsm connections
Gateway and CCM has mgcp connection.
On callmanager fxo port configuration, I configured AttendantDN for routing incoming calls to this DN.
what is the relation of using battery reversal command for routing the incoming calls to Attendant DN which is specifed on callmanager.
Because if i enabled battery reversal under fxo port(it is also enabled default), calls directed to Attendant DN but only one time phone rings and then disconnects.
But if i use no battery-reversal command under voice-port ,calls go to the AttendantDN and call can be set up succeessfully.But this time i often face to outgoing calls busy problem.
To specify battery polarity reversal on a Foreign Exchange Office (FXO) or Foreign Exchange Station (FXS) port, use the battery-reversal command in voice-port configuration mode.