BusinessPhone Communication Platform 4.0
Signal Types, Internal Messages and CSW-Blocks > Internal Messages - Info Codes > Sorted by Info code

## 5C MUCTRL

00h MUIDLECHN |  | Background music PCM channel |
01h MUHOLDCHN |  | Music on hold PCM channel |
02h MUACK |  | Answer msg for subcodes MUIDLECHN and MUHOLDCHN |
03h MUNAK |  | Answer msg for subcodes MUIDLECHN and MUHOLDCHN |
04h MUANNOLOADED |  | Inform that announcements are loaded |

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