# Modem Control

The Modem Control (tsLineModem) field specifies the type of modem control the line is using. Possible values include:

Unknown

None

Call-in

Call-out

Cts-required

Ri-is-cd

Inout

# Call-in

Indicates dial-in modems that use the status of DTR to determine whether to answer an incoming call.

# Call-out

Indicates modems that raise DTR to check if CTS becomes high as an indication that the host has noticed its signal.

# Cts-required

Indicates the form of modem control that requires CTS to be high throughout the use of the line.

# Ri-is-cd

Used for lines with high-speed modems. The modem answers the call if DTR is high, uses its CD signal to reflect the carrier presence, and has its CD signal wired to the ring input of the terminal service.

# Inout

Used to configure a line for both incoming and outgoing calls. The command enables a line to be used for both incoming and outgoing calls on dial-in/dial-out modems.