How to configure the password-based call barring service rights for numbers in batches on the U1900?

To configure password-based call barring on the U1980, perform the following steps: 1. Add the service rights. a. Add the password-based call barring service rights for users. b. Log in to the LMT command tree and access the config mode. c. In the command input area, run the config modify subscriber command. d. Set Dn to the user number that needs to use the password-based call barring service and PwdCallLimit to Yes. e. Click Execute. 2. Enable the call barring function. c. In the command input area, run the config modify prefix command. b. Set PwdCallLimit to Yes. c. Click Execute. 3. Set the password-based call barring prefix. a. In the command input area, run the config add prefix command. b. Set the call attribute to PwdCallLimit. c. Click Execute. To delete password-based call barring on the U1980, perform the following steps: 1. Log in to the LMT command tree and access the config mode. 2. In the command input area, run the config modify subscriber command. 3. Set Dn to the user number whose password-based call barring service needs to be deleted and PwdCallLimit to No. 4. Click Execute.