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diff --git a/README.md b/README.md
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+Network from Scratch on Gentoo
+==============================
+
+#### 1. Add these to `package.keywords` (in `/etc/portage`):
+
+    =net-wireless/openbsc-9999 **
+    =net-wireless/osmobts-9999 **
+    =net-wireless/osmotrx-9999 **
+    =net-libs/libosmo-abis-9999 **
+
+#### 2. Make sure your portage tree is up to date, and emerge the right packages:
+
+    $ sudo emerge --sync
+    $ sudo emerge openbsc osmobts osmotrx
+
+#### 3. Customize config files.
+
+* arfcn should be for a spectrum for which you have a license
+* read documentation for all values
+
+#### 4. Use `start.sh` in this repo.
diff --git a/open-bsc.cfg b/open-bsc.cfg
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+e1_input
+ e1_line 0 driver ipa
+ e1_line 0 port 0
+network
+ network country code 001
+ mobile network code 01
+ short name OpenBSC
+ long name OpenBSC
+ auth policy accept-all
+ location updating reject cause 13
+ encryption a5 0
+ neci 1
+ paging any use tch 0
+ rrlp mode ms-based
+ mm info 1
+ handover 0
+ handover window rxlev averaging 10
+ handover window rxqual averaging 1
+ handover window rxlev neighbor averaging 10
+ handover power budget interval 6
+ handover power budget hysteresis 3
+ handover maximum distance 9999
+ timer t3101 10
+ timer t3103 0
+ timer t3105 0
+ timer t3107 0
+ timer t3109 0
+ timer t3111 0
+ timer t3113 60
+ timer t3115 0
+ timer t3117 0
+ timer t3119 0
+ timer t3122 10
+ timer t3141 0
+ dtx-used 0
+ subscriber-keep-in-ram 0
+ bts 0
+  type sysmobts
+  band GSM900
+  cell_identity 0
+  location_area_code 1
+  training_sequence_code 7
+  base_station_id_code 63
+  ms max power 33
+  cell reselection hysteresis 4
+  rxlev access min 0
+  periodic location update 30
+  channel allocator descending
+  rach tx integer 9
+  rach max transmission 7
+  channel-descrption attach 1
+  channel-descrption bs-pa-mfrms 5
+  channel-descrption bs-ag-blks-res 1
+  ip.access unit_id 1801 0
+  oml ip.access stream_id 255 line 0
+  neighbor-list mode automatic
+  trx 0
+   rf_locked 0
+   arfcn 1
+   nominal power 0
+   max_power_red 0
+   rsl e1 tei 0
+    timeslot 0
+     phys_chan_config CCCH+SDCCH4
+     hopping enabled 0
+    timeslot 1
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 2
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 3
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 4
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 5
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 6
+     phys_chan_config TCH/F
+     hopping enabled 0
+    timeslot 7
+     phys_chan_config TCH/F
+     hopping enabled 0
diff --git a/osmo-bts.cfg b/osmo-bts.cfg
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+bts 0
+ band GSM900 
+ ipa unit-id 1801 0
+ oml remote-ip 127.0.0.1
+ rtp bind-ip 127.0.0.1
+ rtp jitter-buffer 0
+ paging lifetime 0
+ gsmtap-sapi bcch
+ gsmtap-sapi ccch
+ gsmtap-sapi rach
+ gsmtap-sapi agch
+ gsmtap-sapi pch
+ gsmtap-sapi sdcch
+ gsmtap-sapi pacch
+ gsmtap-sapi pdtch
+ gsmtap-sapi sacch
+ fn-advance 20
+ ms-power-loop -10
+ timing-advance-loop
+ trx 0
+  rxgain 0
+  power 0
diff --git a/start.sh b/start.sh
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+#!/bin/bash
+
+config_dir="$(readlink -f "$(dirname "$0")")"
+openbsc_config="$config_dir/open-bsc.cfg"
+osmobts_config="$config_dir/osmo-bts.cfg"
+hlr_db="$config_dir/hlr.sqlite3"
+window_title="GSM"
+lcr=""
+
+[[ $1 == "lcr" ]] && lcr="-m"
+
+tmux new-session -s "$window_title" -n close-me -d
+
+tmux new-window -n OpenBSC -t "$window_title"
+tmux send-keys -t OpenBSC "osmo-nitb -c '$openbsc_config' -l '$hlr_db' -P -C --debug=DRLL:DCC:DMM:DRR:DRSL:DNM $lcr" Enter
+
+tmux new-window -n OsmoBTS -t "$window_title"
+tmux send-keys -t OsmoBTS "osmobts-trx -c '$osmobts_config'" Enter
+
+if [[ -n $lcr ]]; then
+	tmux new-window -n LCR -t "$window_title"
+	tmux send-keys -t LCR "/usr/sbin/lcr start" Enter
+fi
+
+tmux new-window -n OsmoTRX -t "$window_title"
+tmux send-keys -t OsmoTRX "osmo-trx" Enter
+
+tmux new-window -n BSC-Control -t "$window_title"
+tmux send-keys -t BSC-Control "while ! /sbin/ss -n -l -t state listening src \"*:4242\" | grep -q :4242; do sleep 0.5; done; telnet 127.0.0.1 4242" Enter
+
+tmux new-window -n BTS-Control -t "$window_title"
+tmux send-keys -t BTS-Control "while ! /sbin/ss -n -l -t state listening src \"*:4241\" | grep -q :4241; do sleep 0.5; done; telnet 127.0.0.1 4241" Enter
+
+tmux new-window -n HLR -t "$window_title"
+tmux send-keys -t HLR "watch -t -n 1 \"sqlite3 -column -header '$hlr_db' 'SELECT * from Subscriber ORDER BY expire_lu DESC'\"" Enter
+
+tmux set-option -t "$window_title" status on
+tmux set-option -t "$window_title" set-titles on
+tmux set-option -t "$window_title" set-titles-string "GSM Base Station"
+tmux set-option -t "$window_title" status-right ""
+tmux kill-window -t close-me
+tmux select-window -t OpenBSC
+tmux attach -t "$window_title"