Caller ID Set Up - US Robotic 56K USB Modem Model USR5637

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You need Caller ID display support not voice.

This post might help

Caller id popup

If your modem supports caller id it should display calling number after first or second ring. If you are sure your modem supports caller-id feature that might be disabled. You can try one of these commands to enable it. You can directly type command on terminal window and press enter. AT+VCID=1 AT#CID=1 AT#CID=2 AT%CCID=1 AT%CCID=2 AT#CC1 AT*ID1 If one of them works please let us know which one enables it. It should display OK or similar confirmation command if it can successfully enables Cal…