# MFS editable parameters

To program the MFS TCP to operate within different countries and networks, modify the TCP-specific parameters. These parameters are stored within the parameter category NCC.X.ADI_MFS. You can modify parameters that program TCP/host interaction, that configure unregulated features or configure features that can change from switch to switch within the same network.

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

Field | Type/ Unit | Default | Description
--- | --- | --- | ---
DIDnumber | count | 5 | Inbound: Specifies the number of incoming DID digits to expect. In Spain, the PSTN always provides five DID digits.
ANInumber | count | 9 | Inbound: Specifies the number of incoming ANI digits to expect. Set to 0 for no ANI collection. Possible values are 0 or 9.
RTCdigitnumber | count | 9 | Outbound: Specifies the number of digits that must be provided to the network (RTC=Rede Telefonica Conmutada). Spain has a fixed 9 digit scheme which cannot be changed.
playbusyonreject | mask | 0x1 | Controls playing busy tone after rejecting a call: 0 - Do not play the tone. 1 - Play the tone (default).
playcleardowntone | mask | 0x0 | Controls playing cleardown tone after clearing back a call: 0 - Do not play the tone. 1 - Play the tone.
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)
anifirst | mask | 0x0 | If set to 1, inbound collects ANI digits first, then DID digits.
twooffivesignaling | mask | 0x0 | Set to 1 if using two-of-five signaling.

Refer to MFS non-editable parameters for more information.