1# Telephony Subsystem Changelog 2 3 4 5## cl.telephony.1 Radio Module API Change 6 7 8### Changed the `isNrSupported` API in the radio module of the telephone subsystem: 9 10NR is a proper noun and must be capitalized. 11 12You need to adapt your application. 13 14 15 16**Change Impacts** 17 18The JS API needs to be adapted for applications developed based on earlier versions. Otherwise, relevant functions will be affected. 19 20 21 22**Key API/Component Changes** 23 24- Involved APIs: 25 26 isNrSupported(): boolean; 27 isNrSupported(slotId: number): boolean; 28 29- Before change: 30 31```js 32function isNrSupported(): boolean; 33function isNrSupported(slotId: number): boolean; 34``` 35 36- After change: 37 38```js 39function isNRSupported(): boolean; 40function isNRSupported(slotId: number): boolean; 41``` 42 43 44 45**Adaptation Guide** 46 47Use the new API. The sample code is as follows: 48 49```js 50let result = radio.isNrSupported(); 51console.log("Result: "+ result); 52``` 53 54 55```js 56let slotId = 0; 57let result = radio.isNRSupported(slotId); 58console.log("Result: "+ result); 59``` 60