IP-to-IP Gateway(IPIPGW) TIPs:slow-start to fast-start interworking

Slow-start to fast-start interworking prevents the IPIPGW from dropping calls down to slow-start when it detects different call signaling on the incoming and outgoing call legs of H.323 to H.323 calls.Slow-start to fast-start interworking supports voice,DTMF relay and T.38 fax.
Configurations can either be done on the dial peer level or global config level.
The following config shows slow-start to fast-start interworkin on an IPIPGW at the global level:

voice service voip
h323
call start interwork

The call start interwork command only supports interwork between fast-start to slow-start.It shouldn't be used in situations where fast-start t0 fast-start or slow-start to slow-start calls are possible