8.3 KiB
FieldPOC
A simple to use, good enough phone system for medium sized DECT networks.
Setup
FieldPOC requires a Mitel SIP DECT phone system, i.e. RFP L43 WLAN. Make sure you have the equipment, else this software is quit useless.
Get a computer, i.e. an APU Board, and install Archlinux on it. This can be a VM too, but you have to adapt stuff.
Config
Create a file fieldpoc_config.json.
This is your FieldPOC config in JSON format.
You will add details to it with each step.
Networking
We assume you use two network interfaces enp2s0 and enp3s0.
Configuration examples are for systemd-networkd.
systemctl enable --now systemd-networkd.service
Your FieldPOC box will act as a normal DHCP Client on enp2s0.
This is the interface you connect to the internet and where you may connect to the box via SSH.
/etc/systemd/network/20-wired.network
[Match]
Name=enp2s0
[Network]
DHCP=yes
The other interface enp3s0 will be the DECT network.
This is the network where you connect your RFPs.
We will run a dedicated DHCP Server on this network.
/etc/systemd/network/30-dect.network
[Match]
Name=enp3s0
[Network]
Address=10.222.222.1/24
As the DHCP Server for this network we use kea.
pacman -S kea
/etc/kea/kea-dhcp4.conf
{
"Dhcp4": {
"interfaces-config": {
"interfaces": [
"enp3s0"
]
},
"lease-database": {
"name": "/var/lib/kea/dhcp4.leases",
"persist": true,
"type": "memfile"
},
"option-def": [
{
"code": 43,
"encapsulate": "sipdect",
"name": "vendor-encapsulated-options",
"space": "dhcp4",
"type": "empty"
},
{
"code": 10,
"name": "ommip1",
"space": "sipdect",
"type": "ipv4-address"
},
{
"code": 19,
"name": "ommip2",
"space": "sipdect",
"type": "ipv4-address"
},
{
"code": 14,
"name": "syslogip",
"space": "sipdect",
"type": "ipv4-address"
},
{
"code": 15,
"name": "syslogport",
"space": "sipdect",
"type": "int16"
},
{
"code": 224,
"name": "magic_str",
"space": "dhcp4",
"type": "string"
}
],
"subnet4": [
{
"option-data": [
{
"data": "10.222.222.1",
"name": "routers"
}
],
"pools": [
{
"pool": "10.222.222.100 - 10.222.222.200"
}
],
"reservations": [
{
"hostname": "<name of your oom>",
"hw-address": "<mac address of your oom>",
"ip-address": "10.222.222.11",
"option-data": [
{
"data": "<name of your oom>",
"name": "host-name"
},
{
"name": "vendor-encapsulated-options"
},
{
"data": "10.222.222.11",
"name": "ommip1",
"space": "sipdect"
},
{
"data": "OpenMobilitySIP-DECT",
"name": "magic_str"
}
]
}
],
"subnet": "10.222.222.0/24"
}
]
}
}
Start the service.
systemctl enable --now kea-dhcp4
Database
pacman -S postgresql
Init database.
su - postgres -c "initdb --locale en_US.UTF-8 -D '/var/lib/postgres/data'"
systemctl enable --now postgresql
Open SQL shell
sudo -u postgres psql
Create database and user for routing engine. Change the password.
CREATE USER fieldpoc WITH PASSWORD 'fieldpoc';
CREATE DATABASE fieldpoc WITH OWNER fieldpoc;
Add the database credetials to your fieldpoc_config.json.
{
"database": {
"host": "127.0.0.1",
"username": "fieldpoc",
"password": "fieldpoc",
"database": "fieldpoc"
}
}
Phone Server
pacman -S yate
Remove all files in /etc/yate/ and add the following instead:
Dialout SIP connection
accfile.conf
[dialout]
enabled=yes
protocol=sip
registrar=10.222.222.254
username=dialout
password=xxx
Call deduplication
cdrbuild.conf
[parameters]
X-Eventphone-Id=false
Yate remote control socket
extmodule.conf
[listener fieldpoc]
type=tcp
addr=127.0.0.1
port=5039
Add the information for the remote control socket to fieldpoc_config.json:
{
"yate": {
"host": "127.0.0.1",
"port": 5039
}
}
Database connection
Replace credentials with the ones you have choosen.
pgsqldb.conf
[default]
host=127.0.0.1
database=fieldpoc
user=fieldpoc
password=fieldpoc
Call routing
regexroute.conf
[default]
${username}^$=-;error=noauth
^iocaste$=goto dialin
^99991001$=tone/dial
^99991002$=tone/busy
^99991003$=tone/ring
^99991004$=tone/specdial
^99991005$=tone/congestion
^99991006$=tone/outoforder
^99991007$=tone/milliwatt
^99991008$=tone/info
^.*$=line/\0;line=dialout
[dialin]
${sip_x-called}^.*$=lateroute/\1
User registration
register.conf
[general]
expires=30
user.auth=yes
user.register=yes
user.unregister=yes
engine.timer=yes
;call.preroute=no
call.cdr=yes
linetracker=yes
[default]
priority=10
account=default
[user.auth]
query=SELECT password FROM users WHERE username='${username}' AND password IS NOT NULL AND password<>'' AND type='user' LIMIT 1;
result=password
[user.register]
query=INSERT INTO registrations (username, location, oconnection_id, expires) VALUES ('${username}', '${data}', '${oconnection_id}', NOW() + INTERVAL '${expires} s') ON CONFLICT ON CONSTRAINT uniq_registrations DO UPDATE SET expires = NOW() + INTERVAL '${expires} s'
[user.unregister]
query=DELETE FROM registrations WHERE (username = '${username}' AND location = '${data}' AND oconnection_id = '${connection_id}') OR ('${username}' = '' AND '${data}' = '' AND oconnection_id = '${connection_id}')
[engine.timer]
query=DELETE FROM registrations WHERE expires<=CURRENT_TIMESTAMP;
[call.cdr]
critical=no
[linetracker]
critical=yes
initquery=UPDATE users SET inuse=0 WHERE inuse is not NULL;DELETE from active_calls;
cdr_initialize=UPDATE users SET inuse=inuse+1 WHERE username='${external}';INSERT INTO active_calls SELECT username, x_eventphone_id FROM (SELECT '${external}' as username, '${X-Eventphone-Id}' as x_eventphone_id, '${direction}' as direction) as active_call WHERE x_eventphone_id != '' AND x_eventphone_id IS NOT NULL and direction = 'outgoing';
cdr_finalize=UPDATE users SET inuse=(CASE WHEN inuse>0 THEN inuse-1 ELSE 0 END) WHERE username='${external}';DELETE FROM active_calls WHERE username = '${external}' AND x_eventphone_id = '${X-Eventphone-Id}' AND '${direction}' = 'outgoing';
DECT
Just choose one of your RFPs as your OMM. Find out the MAC address and fill it in the according fields in the kea config before.
Please generate a 16-characters long hexadecimal string as sipsecret.
This allowes the SIP accounts used for DECT phones to get a deterministic, but somewhat secure internal password.
Create a privileged user account and add the credentials to fieldpoc_config.json:
{
"omm": {
"host": "10.222.222.11",
"username": "omm",
"password": "<password>"
"sipsecret": "<secret>"
}
}
FieldPOC
Make sure Python is installed.
pacman -S python
Install FieldPOC:
pip install git+https://git.clerie.de/clerie/fieldpoc@main
FieldPOC provides a telnet socket for debugging and state mangement, add config for this to fieldpoc_config.json too:
{
"controller": {
"host": "127.0.0.1",
"port": 9437
}
}
Usage
Init
Some datastructures have get prepared once:
fieldpoc -c /path/to/fieldpoc_config.json -e /path/to/fieldpoc_extensions.json --init
Run
fieldpoc -c /path/to/fieldpoc_config.json -e /path/to/fieldpoc_extensions.json
Debug
Show log messages:
fieldpoc -c /path/to/fieldpoc_config.json -e /path/to/fieldpoc_extensions.json --debug
Development setup
Make sure you have mitel_ommclient2 in your Python modules path.
Add user credentials to your OMM to fieldpoc_config.json.
Edit fieldpoc_extensions.json to meet your preferences.
Start FieldPOC:
python -m fieldpoc.run
List some options:
python -m fieldpoc.run --help