> diff --git a/gnu/packages/telephony.scm b/gnu/packages/telephony.scm
> index aa65c4eaad..dc0adc7334 100644
> --- a/gnu/packages/telephony.scm
> +++ b/gnu/packages/telephony.scm
> @@ -456,7 +456,7 @@ (define-public sipwitch
>  (define-public libsrtp
>    (package
>      (name "libsrtp")
> -    (version "2.4.2")
> +    (version "2.5.0")

This should be split to a separate commit (one package per commit).

Also, according to `guix refresh --list-dependent libsrtp` libsrtp has
739 (>300) dependent packages and should thus not be updated on master to avoid
a drop in substitute availability. Have you checked if the calls work
with libsrtp 2.4.2 so that the telegram update could be applied to
master without updating libsrtp?