I would like to know if my understanding is correct or no. Please do confirm the same.
FOR A CALLABLE BOND:
If the interest rate increases, the value of the call option decreases (Value of Call option is inversely related to level of interest rate), which implies the value of the callable bond increases. (Value of Callable Bond = Value of Option Free Bond - Value of Call Option).
FOR A PUTABLE BOND:
If the interest rate increases, the value of the put option increases (Value of Put option is directly related to level of interest rate), which implies the value of the increases bond increases. (Value of Putable Bond = Value of Option Free Bond + Value of Put Option).