The UDPPORT parameter in the AMO SIPCO is used for the payload
stream in the IPDA master connection, i.e. for connections between the
IPDA-HG 3500 and the HG 3575 and vice versa and for connections from
HG 3575 to HG 3575.
For IPDA master connections, only the start value is defined in the
AMO SIPCO, TYPE=DIFFSERV, UDPPORT=<4352 ... 65083>.
The upper value (=maximum number of ports actually used) is calculated
on the basis of the number of B channels of the board used.
The port with the lowest value can be set to even values in the range
[4352 ... 65280].