asterisk users - Oct 2003 - codec bridging

hi!

I got 3 servers doing IAX2,
I need to setup,



S1---------IAX2(G723.1)------------S2-------IAX2(mu-law)------>S3

But if I do this S2 will complain,
    "Operating with different codecs, can't native bridge." And I
don't hear
any sound.  Can we do this ?

denzel.