\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Bell.Labs (Steve Fowlkes)}
\pdfinfo{
  /Title (the-5060-ip-call-server-ics.pdf)
  /Creator (Cheatography)
  /Author (Bell.Labs (Steve Fowlkes))
  /Subject (The 5060 IP Call Server (ICS) Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{48A344}
\definecolor{LightBackground}{HTML}{F3F9F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{The 5060 IP Call Server (ICS) Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Bell.Labs (Steve Fowlkes)} via \textcolor{DarkBackground}{\uline{cheatography.com/20709/cs/3622/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Bell.Labs (Steve Fowlkes) \\
  \uline{cheatography.com/steve-fowlkes} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 7th March, 2015.\\
   Updated 13th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The IP Call Server General}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The 5060 is on one box, but is made up of many functions that offer a huge portion of the IMS control functionality. It houses the entire SIP chain of signalling communication for an IMS network as well as a few other functions. These include: \newline % Row Count 5 (+ 5)
{\bf{The 5450 IP Session Controller}} \newline % Row Count 6 (+ 1)
{\bf{The 5420 Converged Telephony Server}} \newline % Row Count 7 (+ 1)
{\bf{The 5060 Media Gateway Controller 8 }} \newline % Row Count 8 (+ 1)
Includes the Media Gateway Control Function (MGCF) \newline % Row Count 10 (+ 2)
Includes the Media Resource Function (MRF) \newline % Row Count 11 (+ 1)
{\bf{The Internal Home Subscriber Server (iHSS)}} \newline % Row Count 12 (+ 1)
{\bf{The Internal Charging Collection Funcion (iCCF)}} \newline % Row Count 14 (+ 2)
{\bf{The Internal Access Gateway Control Function (iAGCF)}} \newline % Row Count 16 (+ 2)
{\emph{Each of these functions are further broken down into sub-functions that provide IMS functionality.}}% Row Count 18 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The Internal Home Subscriber Server (iHSS)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The Internal HSS, a variant of the external HSS, provides a database of home subscriber information including: \newline % Row Count 3 (+ 3)
Subscriber Identity (Public and Private ID's) \newline % Row Count 4 (+ 1)
Service Profile \newline % Row Count 5 (+ 1)
Location of the Subscriber \newline % Row Count 6 (+ 1)
This information is provisioned by using the 1360 COM.% Row Count 8 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The IP Session Control Function (ISC)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The IP Session Control Function is the on board suite that let's the ICS control the signaling SIP flow for call setup.  It includes: \newline % Row Count 3 (+ 3)
{\bf{The Proxy CSCF}} \newline % Row Count 4 (+ 1)
{\bf{The Interrogating CSCF}} \newline % Row Count 5 (+ 1)
{\bf{The Serving CSCF}} \newline % Row Count 6 (+ 1)
{\bf{The Emergency CSCF}} \newline % Row Count 7 (+ 1)
{\bf{The Break-out Gateway Control Function}} This is what handles calls that must exit the IMS core, due to any manner of errors.  \newline % Row Count 10 (+ 3)
{\bf{The Service-based Policy Decision Function}} \newline % Row Count 11 (+ 1)
{\bf{The IMS Gateway Function}} This performs inter-working between the Serving-CSCF and an Offline Charging System. \newline % Row Count 14 (+ 3)
{\emph{Each of these functions interacts with other higher (Application Layer) or lower (Media Layer) functions and servers.}}% Row Count 17 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The Internal Access Gateway Function (iAGF)}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The iAGF is {\emph{technically}} apart of the IP Session Controller Functionality. It is used to talk with the 7510 Media Gateway's Centralized Access Gateway to provide media translation of POTS / PSTN phones.  \newline % Row Count 5 (+ 5)
The iAGF will appear as a Proxy-CSCF, in getting to the IMS core. It 'speaks' H.248 to the 7510's C-AGW, and SIP to the other IMS CSCF's.% Row Count 8 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The 5420 Converged Telephony Server}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The 5420 CTS is an Application Server that is on board that 5060 IP Call Server. \newline % Row Count 2 (+ 2)
It works in the "Application Layer".  It provides voice services such as: \newline % Row Count 4 (+ 2)
{\bf{Number Translation}} \newline % Row Count 5 (+ 1)
{\bf{Number Normalization}} \newline % Row Count 6 (+ 1)
{\bf{Caller-ID Features}} \newline % Row Count 7 (+ 1)
{\bf{Call Return/Blocking}} \newline % Row Count 8 (+ 1)
{\bf{Ring-back Tones}} \newline % Row Count 9 (+ 1)
{\bf{Anonymous Call Blocking}} \newline % Row Count 10 (+ 1)
{\bf{Black Listing}} \newline % Row Count 11 (+ 1)
{\bf{Call Parking}} \newline % Row Count 12 (+ 1)
{\bf{Authorization Codes}} \newline % Row Count 13 (+ 1)
{\bf{Call Conferences}} \newline % Row Count 14 (+ 1)
{\bf{Call Trace}} \newline % Row Count 15 (+ 1)
{\bf{Web Portal GUI Management}} \newline % Row Count 16 (+ 1)
{\bf{Integrated Charging Function}} \newline % Row Count 17 (+ 1)
{\bf{Many, Many More...}}% Row Count 18 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{The Media Gateway Controller Function-8}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{The Media Gateway Controller, as the name implies, controls the 7510 MGW, using H.248 signaling. It's other functions include much to do with SS7 signaling, including: \newline % Row Count 4 (+ 4)
{\bf{SS7 Termination}} \newline % Row Count 5 (+ 1)
{\bf{Border Control for other carrier's SIP networks}} \newline % Row Count 7 (+ 2)
{\bf{Service Based Policy Decision}} for other carrier's IP networks. It will control the 7510 MGW's Interconnect Border Gateway Function (IBGF)to do this% Row Count 11 (+ 4)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}