As was already mentioned, there are networks (or customers) who do not continue dialing until they hear a dial tone. The problem can now also occur on incoming seizures (terminating connections). A dial tone should be applied as soon as the line is ready for digit input. Different dial tones are possible. Administer them as follows:

COP parameter: DTN (dial tone on incoming seizure)

COT parameter: DTNI (internal dial tone) or DTNE (incoming dial tone, outgoing mark as co-conn) or ANNC (local announcement). You must set one of the parameters NTON (no tone), DTNI, DTNE, or ANNC. You can administer the actual tones using the AMO ZAND after the normal configuration.