# EUC editable parameters

To program the EUC TCP to implement the specifications of the supported countries and network operators, modify the TCP-specific parameters, stored within the parameter category NCC.X.ADI_EUC. You can modify parameters that program TCP/host interaction, configure unregulated features or configure features that can change from switch to switch within the same network.

The following table describes NCC.X.ADI_EUC parameters (within the parameter category NCC.X.ADI_EUC) that you can modify:

Field | Type/ Unit | Default | Description
--- | --- | --- | ---
digitnumber | count | 7 | Inbound: specifies number of incoming digits to expect.
waitingplaybusy | mask | 0x1 | This parameter and the waitingplayreorder parameter specify what to play as cleardown tone (the tone the TCP plays when an inbound call is released and the calling party has not hung up yet). If this parameter is 1,the busy tone is used as the cleardown tone. If neither of the parameters is set, the TCP remains silent.
waitingplayreorder | mask | 0x0 | This parameter and the waitingplaybusy parameter specify what to play as cleardown tone. If this parameter is 1, the fast busy (reorder) tone is used as the cleardown tone. If neither of the parameters is set, the TCP remains silent.
trunkdirection | mask | 0x0 | Determine trunk direction: 0 - Bidirectional 1 - Inbound only (no calls can be placed on it) 2 - Outbound only (no calls can be received on it)
detectnetworkaudio | mask | 0x0 | Setting this parameter to 1 forces the TCP to perform call progress when all digits have been delivered to the network in an outbound call, even for protocols that give a positive indication of the state of the call. The default value is 0. This value will not start call progress detection if the user sets the connectmask to connect on SIGNAL. The 0 value saves DSP resources.
lastdtmf | mask | 0x0 | These bits define the ST tone: the last received tone that outbound sends. 0 = ignored

Refer to EUC non-editable parameters for more information.