- Table of contents
- Dialup Network In A Box
Dialup Network In A Box¶
This is a self-contained, portable telephony network which allows us to connect and analog modems and ISDN adapters at retrocomputing events.
The setup (as of Q4/2019) consists of:- Auerswald COMmander Basic2 PBX with 8x S0 (ISDN BRI) ports, 16x a/b (analog) ports, 8x Up0 (ISDN) ports and 1x S2M (E1 ISDN PRI)
- 1U Rack-Mount Atom PC with 4-port E1 (DAHDI) card and FreeSwitch: Emulates public telephone exchange
- Livingston Portmaster 3 RAS with ability to terminate 30 ISDN or analog modem calls
- icE1usb to connect to OCTOI Community TDMoIP
Telephony Setup¶
The physical setup looks like this:
Logical Setup:¶
This shows the logical setup including PCs and associated software:
Pictures¶
Ethernet Switch configuration¶
We have an old 16-port gigabit ethernet switch (DELL PowerConnect 2716) in our setup.
VLAN 1 (admin)¶
- Port 1: untagged
- Port 7: PC eth1 (tagged)
- Port 8: admin laptop (tagged)
VLAN 11 (admin)¶
This is a "jumper" from VLAN 1 (untagged) to VLAN 11 (tagged) as the switch doesn't natively support its web interface on a tagged IP
- Port 4: untagged
- Port 7: PC eth1 (tagged)
- Port 8: admin laptop (tagged)
VLAN 3999 (uplink)¶
- Ports 9..16
- Port 8: admin laptop (tagged)
VLAN 4000 (auerswald)¶
- Port 2: Auerswald (untagged)
- Port 7: PC eth1 (tagged)
- Port 8: admin laptop (tagged)
VLAN 4001 (PM3)¶
- Port 3: PM3 (untagged)
- Port 7: PC eth1 (tagged)
- Port 8: admin laptop (tagged)
E1 configuration¶
E1 ports on the atom1u machine with DAHDI + freeswitch¶
The ports are allocated as follows:
- Port E1/1: Auerswald
- Port E1/2: PM3
- Port E1/3: Unused
- Port E1/4: icE1usb
The ports, as well as those of the portsmaster + auerswald are brougiht out on the keystone patch panel. They must be connected as stated above using E1 cross-over cables. those have a special pin-out, and are not to be confused with Ethernet cables (straight or cross-over).
IP Network configuration¶
VLAN 1/11 (admin)¶
| IP | Host |
|---|---|
| 192.168.2.1 | dell2716 switch |
| 192.168.2.222 | admin laptop |
| 192.168.2.254 | atom1u |
VLAN 3999 (uplink)¶
| IP | Host |
|---|---|
| DHCP | atom1u |
| DHCP | admin laptop |
VLAN 4000 (auerswald)¶
| IP | Host |
|---|---|
| 192.168.0.222 | admin laptop |
| 192.168.0.240 | Auerswald Commander Basic2 |
| 192.168.0.254 | atom1u |
VLAN 4001 (PM3)¶
| IP | Host |
|---|---|
| 192.168.3.1 | Livingston Portmaster 3 |
| 192.168.3.100 | telnet/rlogin host (atom1u) |
| 192.`68.3.222 | admin laptop |
| 192.168.3.254 | default-gw (atom1u) |
| 192.168.4.0/24 | PPP lease pool |
Updated by laforge about 1 year ago · 13 revisions
