MTG2000 Trunk Gateway User Manual V| Dinstar
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4.9.3 Port Number
The telephone number bound to E1/T1 Port
The telephone number pool bound to E1/T1 Port. the
numbers will be chosen in an Incremental way.
There are three options, namely Replace/Not replace/Replace
when empty, for PSTN->IP callee numbers.
There are two options, namely Replace/Not replace, for
IP->PSTN caller numbers.
4.9.4 Codec Group
On the Codec Group interface, you can group several voice Codecs together, so when one
voice Codec is faulty, another voice Codec in the same group can be used. Except Codec
group 0, the parameters of other Codec groups can be modified.