Normally, you can’t change the DS1 Media Module screen unless you remove all related trunks from their trunk group. However, if the DS1 MSP field on the System-Parameters Customer-Options (Optional Features) screen is y, and you are assigned the associated login permissions, you can change some of the fields on the DS1 Media Module screen without removing the related trunks from their trunk group.

If you busy out the DS1 media module, you can change the following fields: CRC, Connect, Country Protocol, Framing Mode, Interface, Interconnect, Line Coding, and Protocol Version.

After changing these fields, you might also have to change and resubmit associated screens.