[cisco-voip] Playing IVR prompts

[Francisco]

I have a trouble playing prompts over IP Call Legs.
According with the Cisco's document "Configuring TCL IVR Applications" , 
there are some restrictions;
"...
TCL IVR scripts played toward a VoIP call leg are subject to the following
conditions:
.G.711 mu-law encoding must be used when prompts are played.

....."
This is my scenario:

(Called side) PSTN<--------> GW ( IVR )<----h323----> INTERNET 
<----h323----> GW <--------> PSTN    (Caller side)

The trouble is not actually when playing media ( despite the bandwith 
waste ) , other than when the POTS
side talks, the IP side can t hear any sound, but the POTS side can.
I set the codecs at g711ulaw, but the problem persist.

Aditionally if I set the gateway codec to g711alaw, the IP side didnt hear
the IVR prompts but the communication between both sides is successful.

This is my show conf run...

Router# show dial-peer voice 10

VoiceOverIpPeer10
        information type = voice,
        tag = 10, destination-pattern = `',
        answer-address = `000000', preference=0,
        numbering Type = `unknown'
        group = 10, Admin state is up, Operation state is up,
        incoming called-number = `.T', connections/maximum = 0/unlimited,
        DTMF Relay = enabled,
        modem passthrough = system,
        huntstop = disabled,
        in bound application associated: debit2
        out bound application associated:
        permission :both
        incoming COR list:maximum capability
        outgoing COR list:minimum requirement
        type = voip, session-target = `',
        technology prefix:
        settle-call = disabled
        ip precedence = 0, UDP checksum = disabled,
        session-protocol = cisco, session-transport = udp, req-qos = 
best-effort
,
        acc-qos = best-effort,
        dtmf-relay = h245-signal,
        fax rate = voice,   payload size =  20 bytes
        fax protocol = system
        fax-relay ecm enable
        fax NSF = 0xAD0051 (default)
        codec = g711ulaw,   payload size =  160 bytes,
        Expect factor = 0, Icpif = 20,
        Playout Mode is set to adaptive,
        Initial 60 ms, Max 200 ms
        Playout-delay Minimum mode is set to default, value 40 ms
        Max Redirects = 1, signaling-type = ext-signal,
        CLID Restrict = disabled
        VAD = enabled, Poor QOV Trap = disabled,
        voice class perm tag = `'
        Connect Time = 136797, Charged Units = 0,
        Successful Calls = 0, Failed Calls = 0, Incomplete Calls = 0
        Accepted Calls = 13, Refused Calls = 0,
        Last Disconnect Cause is "3   ",
        Last Disconnect Text is "no route to destination.",
        Last Setup Time = 25620629.

any comments?

thanks in advance!