I have configured in CCM an Ericsson H.323 gateway (for use Ericsson DECT Phones) when an Ericsson phone calls to an Cisco IP phone i don't hear ringback tone, but if ip phone is busy i hear busytone. From cisco ip phone to Ericsson phone its ok.
Can i setup something in CCM to force ringback tone when Ericsson phone calls to cisco ip phone??
Is this problem associated only with Ericsson DECT phones associated with cisco ip phones? Configure the Ciso IOS command progress_ind setup enable 3 under the voice dial-peer# voip command in the Cisco gateway.
I have done that, yet.
For external calls (calls to PSTN) calls from DECT phones goes through cisco GW and i don't have that problem. Only for internal calls from Ericsson DECT phone to cisco IP phones. In that case calls don't go through cisco gateway so i don't ear ringback tone, but if ip phone is busy i ear busy tone.
this document might help.
I think i have to change Send h225 user info message in CCM service parameter,
what would be better
User info h225 or h225 info or ANN? Do i have to restart CCM service after change?
I would like to set-up an Ericsson switch (MX-ONE Telephony switch, currently distributed under AASTRA brand) as a H.323 gw in CUCM 6.1.2. Unfortunatelly I failed in this. Would you be willing to share some experience?