Is DTMF supported in SmartWare?
Yes. Generally, DTMF can always be transported either out-of-band or in-band. in-band provides the most accurate timing reproduction of DTMF, but it is not suitable when a compressing codec is used, e.g. G.729 or G.723. In these cases, out-of-band has to be used for reliable DTMF transport. Smartware supports all mechanisms available today: In H.323: SmartWare uses a mechanism called H.245 alphanumeric for the transparent (i.e. loss-less) transport of dialed DTMF digits across an H.323 network. DTMF digits are extracted from the (digital) ISDN signal, transported to the remote H.323 party which inserts the DTMF digit into the signal again. SmartWare allows to configure an H.323 interface to ‘relay’ DTMF signals as described above or to leave the signal unchanged. The latter may cause problems when compression codecs are in use which may distort the DTMF signal such that a receiving IVR application is no longer able to decode the signal properly. In SIP: You can choose between RFC2833 t
