Dialup Network In A Box » History » Version 5
laforge, 01/01/2020 08:13 PM
1 | 3 | laforge | {{>toc}} |
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3 | 1 | laforge | h1. Dialup Network In A Box |
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5 | This is a self-contained, portable telephony network which allows us to connect and analog modems and ISDN adapters at retrocomputing events. |
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6 | |||
7 | The setup (as of Q4/2019) consists of: |
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8 | * [[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) |
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9 | * 1U Rack-Mount Atom PC with 4-port E1 (DAHDI) card and FreeSwitch: Emulates public telephone exchange |
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10 | * [[Livingston Portmaster 3]] RAS with ability to terminate 30 ISDN or analog modem calls |
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11 | |||
12 | h2. Telephony Setup |
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13 | |||
14 | The physical setup looks like this: |
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15 | |||
16 | {{graphviz_link() |
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17 | digraph G{ |
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18 | rankdir = LR; |
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19 | |||
20 | CB2 [label="Auerswald\nCommander Basic2"]; |
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21 | PM3 [label="Livingston\nPortmaster 3"]; |
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22 | ISDNTA1 [label="ISDN TA"]; |
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23 | ISDNTA2 [label="ISDN TA"]; |
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24 | ISDNTAN [label="ISDN TA"]; |
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25 | |||
26 | Modem1 -> CB2 [label="Analog Line"]; |
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27 | Modem2 -> CB2 [label="Analog Line"]; |
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28 | ModemN -> CB2 [label="Analog Line"]; |
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29 | |||
30 | ISDNTA1 -> CB2 [label="ISDN BRI (S0) Line"]; |
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31 | ISDNTA2 -> CB2 [label="ISDN BRI (S0) Line"]; |
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32 | ISDNTAN -> CB2 [label="ISDN BRI (S0) Line"]; |
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33 | |||
34 | CB2 -> FreeSWITCH [label="ISDN PRI (E1) Trunk"]; |
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35 | FreeSWITCH -> PM3 [label="ISDN PRI (E1) Trunk"]; |
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36 | } |
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37 | }} |
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38 | |||
39 | h2. Logical Setup: |
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40 | |||
41 | This shows the logical setup including PCs and associated software: |
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42 | |||
43 | {{graphviz_link() |
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44 | digraph G{ |
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45 | rankdir = LR; |
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46 | |||
47 | PC1 [label="DOS PC 1"]; |
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48 | PC2 [label="DOS PC 2"]; |
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49 | CB2 [label="Auerswald\nCommander Basic2"]; |
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50 | PM3 [label="Livingston\nPortmaster 3"]; |
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51 | ISDNTA1 [label="ISDN TA"]; |
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52 | TERM1 [label="Terminal Program"]; |
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53 | TERM2 [label="Terminal Program"]; |
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54 | |||
55 | subgraph cluster_client1 { |
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56 | label="Dialup User 1"; |
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57 | TERM1 -> PC1; |
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58 | PC1 -> Modem1 [label="RS232"]; |
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59 | } |
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60 | |||
61 | subgraph cluster_client2 { |
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62 | label="Dialup User 2"; |
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63 | TERM2 -> PC2; |
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64 | PC2 -> ISDNTA1 [label="RS232"]; |
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65 | } |
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66 | |||
67 | Modem1 -> CB2 [label="Analog Line"]; |
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68 | ISDNTA1 -> CB2 [label="ISDN BRI (S0) Line"]; |
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69 | |||
70 | CB2 -> FreeSWITCH [label="ISDN PRI (E1) Trunk"]; |
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71 | FreeSWITCH -> PM3 [label="ISDN PRI (E1) Trunk"]; |
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72 | |||
73 | PM3 -> BBS [label="telnet"]; |
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74 | } |
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75 | }} |
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76 | 2 | laforge | |
77 | h2. Pictures |
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78 | |||
79 | !dalup-in-a-box.jpg! |
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80 | 3 | laforge | |
81 | 4 | laforge | !commander_basic2.jpg! |
82 | 5 | laforge | |
83 | h2. Ethernet Switch configuration |
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84 | |||
85 | We have an old 16-port gigabit ethernet switch (DELL PowerConnect 2716) in our setup. |
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86 | |||
87 | h3. VLAN 1 (admin) |
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88 | |||
89 | * Port 1: untagged |
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90 | * Port 7: PC eth1 (tagged) |
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91 | * Port 8: admin laptop (tagged) |
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92 | |||
93 | h3. VLAN 11 (admin) |
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94 | |||
95 | 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 |
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96 | |||
97 | * Port 4: untagged |
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98 | * Port 7: PC eth1 (tagged) |
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99 | * Port 8: admin laptop (tagged) |
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100 | |||
101 | h3. VLAN 3999 (uplink) |
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102 | |||
103 | * Ports 9..16 |
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104 | * Port 8: admin laptop (tagged) |
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105 | |||
106 | h3. VLAN 4000 (auerswald) |
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107 | |||
108 | * Port 2: Auerswald (untagged) |
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109 | * Port 7: PC eth1 (tagged) |
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110 | * Port 8: admin laptop (tagged) |
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111 | |||
112 | h3. VLAN 4001 (PM3) |
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113 | |||
114 | * Port 3: PM3 (untagged) |
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115 | * Port 7: PC eth1 (tagged) |
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116 | * Port 8: admin laptop (tagged) |
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117 | |||
118 | h2. IP Network configuration |
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119 | |||
120 | h3. VLAN 1/11 (admin) |
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121 | |||
122 | |_.IP|_.Host| |
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123 | |192.168.2.1|dell2716 switch| |
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124 | |192.168.2.100|admin laptop| |
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125 | |192.168.2.254|atom1u| |
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126 | |||
127 | h3. VLAN 3999 (uplink) |
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128 | |||
129 | |_.IP|_.Host| |
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130 | |DHCP|atom1u| |
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131 | |||
132 | h3. VLAN 4000 (auerswald) |
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133 | |||
134 | |_.IP|_.Host| |
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135 | |192.168.0.240|[[Auerswald Commander Basic2]]| |
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136 | |192.168.0.254|atom1u| |
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137 | |||
138 | h3. VLAN 4001 (PM3) |
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139 | |||
140 | |_.IP|_.Host| |
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141 | |192.168.3.1|[[Livingston Portmaster 3]]| |
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142 | |192.168.3.100|telnet/rlogin host (atom1u)| |
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143 | |192.168.3.254|default-gw (atom1u)| |
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144 | |192.168.4.0/24|PPP lease pool| |