Your Wish:

"Restrict remote access to selected ports"

MRS Modem Router Switch

Directs inbound modem calls to any of 8 different modems. Port selection through DTMF or CHALLENGER KEYS. One & two line models.

Flexie TelCo Switch Modem Router Switch

Programmable remote selection and control of three ports. Access via Touch-Tone. Optional remote AC power control and reset button reboots.

232-PSS Remote RS-232 Port Selection

Highly secure and very automatic. Four and Eight port models.