On Fri, 30 Mar 2018 00:21:39 +0200
Danny Milosavljevic <dannym@scratchpost.org> wrote:

> * gnu/services/networking.scm (modem-manager-service-type): New
> variable. (<modem-manager-configuration>): New variable.
> (modem-manager-configuration): New procedure.
> (modem-manager-configuration?): New procedure.
> * doc/guix.texi (Networking Services): Document it.
> ---
>  doc/guix.texi               | 22 ++++++++++++++++++++++
>  gnu/services/networking.scm | 39
> +++++++++++++++++++++++++++++++++++++++ 2 files changed, 61
> insertions(+)
> 
> diff --git a/doc/guix.texi b/doc/guix.texi
> index 25c08b9f0..23b7ae089 100644
> --- a/doc/guix.texi
> +++ b/doc/guix.texi
> @@ -10712,6 +10712,28 @@ several commands to interact with the daemon
> and configure networking: and @command{wicd-curses} user interfaces.
>  @end deffn
>  
> +@cindex ModemManager
> +
> +@defvr {Scheme Variable} modem-manager-service-type
> +This is the service type for the
> +@uref{https://wiki.gnome.org/Projects/ModemManager, ModemManager}
> +service. The value for this service type is a
> +@code{modem-manager-configuration} record.

See below ...

[..]

> diff --git a/gnu/services/networking.scm b/gnu/services/networking.scm
> index da96bbeb5..5092a5f35 100644
> --- a/gnu/services/networking.scm
> +++ b/gnu/services/networking.scm

[..]

> +(define modem-manager-service-type

[..]

> +                  (description
> +                   "Run
> @uref{https://wiki.gnome.org/Projects/ModemManager, +ModemManager}, a
> modem management daemon that aims to simplify dialup +networking."))))

URL in texinfo and here: This page says only "This page does not exist
yet. You can create a new empty page, or use one of the page templates.
"

I found this one working, but it's the unstable version:

https://developer.gnome.org/ModemManager/unstable/

Björn