Livingston PortMaster 3 » History » Version 13
laforge, 02/20/2022 02:58 PM
1 | 1 | laforge | h1. Livingston Portmaster 3 |
---|---|---|---|
2 | 2 | laforge | |
3 | 5 | laforge | @laforge bought two Livingston Portmaster 3 PM3A-1E, which are RAS (Remote Access Server) that |
4 | 2 | laforge | * terminates one 1E line (30 B-channels) |
5 | * provides ISDN dial-up on those channels |
||
6 | * provides DSP based modems in case analog modem calls should be handled. |
||
7 | |||
8 | More details to follow. |
||
9 | 3 | laforge | |
10 | h2. Documentation |
||
11 | |||
12 | * attachment:portmaster3_hardware_installation.pdf |
||
13 | * attachment:portmaster3_configuration.pdf |
||
14 | 4 | laforge | * more below (Attachments) |
15 | 6 | laforge | |
16 | 12 | laforge | h2. Electronics / Pictures |
17 | |||
18 | 13 | laforge | h3. External pictures |
19 | |||
20 | 1 | laforge | {{thumbnail(Livingston_Portmaster3_front.jpg)}} |
21 | {{thumbnail(Livingston_Portmaster3_top.jpg)}} |
||
22 | 13 | laforge | {{thumbnail(Livingston_Portmaster3_back.jpg)}} |
23 | |||
24 | h3. Mainboard |
||
25 | |||
26 | {{thumbnail(Livingston_Portmaster3_mainboard.jpg)}} |
||
27 | {{thumbnail(Livingston_Portmaster3_mainboard2.jpg)}} |
||
28 | {{thumbnail(Livingston_Portmaster3_mainboard_top.jpg)}} |
||
29 | {{thumbnail(Livingston_Portmaster3_mainboard_bottom.jpg)}} |
||
30 | |||
31 | h3. DSP / Modem Board |
||
32 | |||
33 | There are 6 slots for modem boards, each board typically has 10 soft-modems, resulting in a total capacity of maximum 60 modems (equalling the number of B-channels in 2 E1 PRI links) |
||
34 | |||
35 | {{thumbnail(Livingston_Portmaster3_dsp_top.jpg)}} |
||
36 | {{thumbnail(Livingston_Portmaster3_dsp_bottom.jpg)}} |
||
37 | 12 | laforge | |
38 | 6 | laforge | h2. Spare Parts / Mods |
39 | |||
40 | h3. Fan |
||
41 | |||
42 | 7 | laforge | The original fan is a Fonsan DFB0812M (DC 12V 0.1A) fan by DELTA ELECTRONICS INC. The specs seem to state 2600 RPM / 24.8 dB(A) / 29 cfm. |
43 | 6 | laforge | |
44 | I found it too noisy and replaced it with a Noctua NF-A8 FLX with L.N.A (reduced to 1650 rpm / 12.9 dB(A) / 24 cfm) |
||
45 | |||
46 | 1 | laforge | Fun fact: The PM3 actually seems to have a 5V -> 12V DC/DC upconverter just for the fan - instead of simply using a 5V fan... |
47 | 7 | laforge | |
48 | h3. Power Supply |
||
49 | |||
50 | One of @laforge's PM3A-E1 had a broken power supply. The oroginal PSU is an ASTEC LPS1112 rated for 5V/22A output (80W convection cooled, 1120W with 30cfm forced air). |
||
51 | |||
52 | It was replaced with a Mean Well LRS-150F-5. Mechanical assembly via a custom adapter plate that was fabricated easily from a small piece of aluminium sheet metal with a few drill holes. |
||
53 | |||
54 | {{thumbnail(PM3-PSU-1.jpg)}} |
||
55 | 8 | laforge | {{thumbnail(PM3-PSU-4.jpg)}} |
56 | {{thumbnail(PM3-PSU-2.jpg)}} |
||
57 | 10 | laforge | |
58 | h2. Configuration |
||
59 | |||
60 | h3. route to different telpnet hosts based on called party number |
||
61 | |||
62 | Assuming one wants to use a PM3 to act as modem bamk for accessing differnt [virtualized] BBSs over telnet, the problem is how to route the inbound call to a specific telnet IP address. The non-radius stand-alone configuration of the PM3 only permits either: |
||
63 | * automatic forwarding of all calls to one global telnet/rlogin host |
||
64 | * allowing the users to enter the hostname for telnet themselves |
||
65 | 11 | laforge | * providing a list of pre-configured telnet desinations to all users (this was used at the 36C3 retronetowrking installation, see [[retro-bbs:36C3]]) |
66 | 1 | laforge | |
67 | 11 | laforge | |
68 | 10 | laforge | However, with the _Call-Check_ radius feature, it should be possibl to receive the called + calling identity before the call is even accepted, and the nin return provide the telnet IP/port to which the call shall be routed. |
69 | |||
70 | Details in |
||
71 | * Page 4-17 of the PM3A Radius for Unix manual |
||
72 | ** PM3A sends _access-request_ with |
||
73 | *** User-Name=SETUP.Calling-Station-Id/No-Call-ID |
||
74 | *** Service-Type=Call-Check |
||
75 | *** Called-Station-Id=SETUP.Called-Station-Id |
||
76 | ** Radius sends response with |
||
77 | *** Login-IP-Host pointing to IP of telnet/rlogin |
||
78 | *** Login-Service=(Telnet,Rlogin,TCP-Clear) |
||
79 | *** Login-TCP-Port pointing to IP of telnet/rlogin |
||
80 | 1 | laforge | *** Service-Type=Login-User |
81 | 10 | laforge | * Page 3-4 of the PortMaster Command Line Reference |
82 | 11 | laforge | ** @set call-check on@ |