Colocated Hub » History » Version 14
laforge, 08/30/2022 02:51 PM
add block diagram for E1
1 | 2 | laforge | {{>toc}} |
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2 | |||
3 | 1 | laforge | h1. Colocated Hub |
4 | |||
5 | 4 | laforge | This page exists to collect planning about the future colocated OCTOI hub, see #5542 |
6 | 2 | laforge | |
7 | 14 | laforge | h2. Block Diagrams |
8 | |||
9 | h3. E1/TDM network |
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10 | |||
11 | {{graphviz_link() |
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12 | graph G { |
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13 | subgraph cluster_colo { |
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14 | label = "Co-Located Hub"; |
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15 | divf [label="DIVF\nCentral Switch",shape="house"]; |
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16 | icE1usb; |
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17 | pm3 [label="Livingston Portmaster 3"]; |
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18 | as54 [label="Cisco AS5400"]; |
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19 | icE1usb -- divf [label="E1 (timing master)"]; |
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20 | pm3 -- divf [label="E1"]; |
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21 | as54 -- divf [label="8xE1"]; |
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22 | } |
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23 | divf -- laforge [label="TDMoIP"]; |
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24 | divf -- manawyrm [label="TDMoIP"]; |
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25 | divf -- gruetzkopf [label="TDMoIP"]; |
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26 | divf -- roox [label="TDMoIP"]; |
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27 | divf -- DrDeke [label="TDMoIP"]; |
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28 | etc [label="other users..."]; |
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29 | divf -- etc [label="TDMoIP"]; |
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30 | } |
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31 | }} |
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32 | |||
33 | |||
34 | 4 | laforge | h2. Rackmount units |
35 | 1 | laforge | |
36 | 4 | laforge | h3. Central Office server (2U / 67cm) |
37 | 1 | laforge | |
38 | 4 | laforge | This is a 2U rack-mount server running all the relevant software. |
39 | 1 | laforge | |
40 | 4 | laforge | See [[AVSt_Server]] for more details of the server |
41 | 1 | laforge | |
42 | 4 | laforge | h4. Connections |
43 | 1 | laforge | |
44 | 4 | laforge | This is a 2U rack-mount server with the following connections: |
45 | * Power |
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46 | 10 | laforge | ** 2x AC power connections (redundant PSU) |
47 | 4 | laforge | * Ethernet |
48 | ** 1x RJ45 100-Base-TX BMC |
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49 | ** 2x RJ45 1000-Base-TX |
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50 | * E1 |
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51 | ** 8x E1 to a co-located Cisco AS5400 (see below) |
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52 | ** 1x E1 to a co-located Livingston PM3 (see below) |
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53 | ** 1x E1 to icE1usb/clock-source |
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54 | 1 | laforge | |
55 | |||
56 | 4 | laforge | h3. icE1usb / E1 clock source (1U / 31cm) |
57 | 1 | laforge | |
58 | 4 | laforge | This is a 1U rack mount system containing: |
59 | * a PC-Engines APU3 embedded x86_64 |
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60 | * an [[e1-t1-adapter:ICE40_E1_USB_interface|icE1usb]] with a custom RS422 interface board |
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61 | * a custom rs422 over voltage protection + 12V injection board |
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62 | 1 | laforge | |
63 | 4 | laforge | This icE1usb acts as a GPS-disciplined clock master. However, as no acutal RF GPS signal is available in the data centre, we are using an Ericsson [[ericsson-rbs-6xxx:GPS_02]] attached via ~100m of RS-422. |
64 | 1 | laforge | |
65 | 4 | laforge | h4. Connections |
66 | 1 | laforge | |
67 | 4 | laforge | * Power |
68 | ** 2x AC power connections (1x APU, 1x RS422/GPS) |
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69 | * Ethernet |
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70 | 8 | laforge | ** 1x RJ45 to internal VLAN |
71 | 4 | laforge | * RS422 |
72 | 1 | laforge | ** 1x RJ45 towards GPS02 on the roof |
73 | |||
74 | 4 | laforge | h3. Cisco AS5400 RAS Server (2U / 49cm) |
75 | 1 | laforge | |
76 | 4 | laforge | h4. Connections |
77 | 1 | laforge | |
78 | 4 | laforge | * Power |
79 | ** 2x AC power connection (redundant PSU) |
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80 | * Ethernet |
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81 | ** 1x RJ45 Ethernet (100-Base-TX) to internal VLAN |
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82 | * E1 |
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83 | ** 8x E1 (via break-out cable) to AVSt-Server |
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84 | 7 | laforge | * RS232 |
85 | ** Serial console connection via USB-UART to [[AVSt_Server]] |
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86 | 4 | laforge | |
87 | h3. Livingstion Portmaster 3 (2U / 31cm) |
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88 | |||
89 | h4. Connections |
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90 | |||
91 | * Power |
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92 | ** 1x AC power connection |
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93 | * Ethernet |
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94 | 9 | laforge | ** 1x RJ45 Ethernet (10-Base-TX) [yes, 10MBps] to internal VLAN |
95 | 4 | laforge | * E1 |
96 | ** 1x E1 to AVSt-Server |
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97 | 6 | laforge | * RS232 |
98 | ** Serial console connection via USB-UART to [[AVSt_Server]] |
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99 | 4 | laforge | |
100 | h2. Roof installation |
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101 | |||
102 | |||
103 | On the roof of the data centre, the CAT5 cable with RS422 for the GPS03 arrives. |
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104 | |||
105 | It will be passed through several DIN rail mounted OVP (Over Voltage Protection) circuits before connecting to the actual DIN-rail mounted Ericsson GPS03 |
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106 | |||
107 | The Ericsson GPS03 has a SMA connector, to which a SMA-male to N-Male coaxial cable is attached. |
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108 | |||
109 | A Times Microwave LP-GTR-NFF lightning protector (N-female to N-femaile) is used to pass the coaxial cable through the enclosure |
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110 | |||
111 | An external GPS antenna with N connector is plugged into the LP-GTR-NFF |
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112 | 1 | laforge | |
113 | 5 | laforge | h3. Overview diagram |
114 | 1 | laforge | |
115 | 5 | laforge | This diagram illustrates the parts and connections on the rooftop. Rectangular objects are DIN-rail mounted. |
116 | 1 | laforge | |
117 | 5 | laforge | {{graphviz_link() |
118 | graph G { |
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119 | subgraph cluster_1 { |
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120 | label="Rooftop enclosure"; |
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121 | rj45splitter [label="RJ45 splitter"]; |
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122 | GPS03 [label="Ericsson GPS03", shape=rect]; |
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123 | ovp_rs422_1 [shape=rect]; |
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124 | ovp_rs422_2 [shape=rect]; |
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125 | ovp_rs422_3 [shape=rect]; |
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126 | ovp_12v [shape=rect]; |
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127 | lp [label="LP-GTR-NFF"]; |
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128 | rj45splitter -- ovp_rs422_1; |
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129 | rj45splitter -- ovp_rs422_2; |
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130 | rj45splitter -- ovp_rs422_3; |
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131 | rj45splitter -- ovp_12v; |
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132 | ovp_rs422_1 -- GPS03; |
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133 | ovp_rs422_2 -- GPS03; |
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134 | ovp_rs422_3 -- GPS03; |
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135 | ovp_12v -- GPS03; |
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136 | GPS03 -- lp [label="SMA-male/N-female"]; |
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137 | } |
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138 | antenna [label="GPS Antenna"]; |
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139 | antenna -- lp [label="RG58 white / N-female"]; |
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140 | rack [label="Rack in DC"]; |
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141 | rack -- rj45splitter [label="CAT5"]; |
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142 | } |
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143 | }} |
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144 | 2 | laforge | |
145 | 1 | laforge | h2. Software |
146 | |||
147 | 3 | laforge | * Like in the current hub at @laforge's basement, we should run the entire yate / osmo-e1d / dahdi-trunkdev inside a KVM with SRV-IO mapping the PCI devices |
148 | |||
149 | |||
150 | h2. Misc / TODO |
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151 | |||
152 | h3. local verification with modem/ISDN-TA |
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153 | |||
154 | It would be great if we could somehow verify local calls via the yate / hub excluding the complexity of the TDMoIP to compare calls without TDMoIP to calls with TDMoIP. |
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155 | |||
156 | Unfortuantely I'm not aware of any really small PBX that would terminate the E1/S2M and offer S0/POTS ports. Adding antoher 3U for a PBX seems excessive. |
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157 | |||
158 | 1 | laforge | Doing calls between PM3 and ASR5400 is of course an option, but ideally we'd have a real physical modem attached via a serial port, and a real HFC-S-USB for test purpose. |
159 | 11 | laforge | |
160 | h2. High-level parameters for data centre |
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161 | |||
162 | * 7U rackspace |
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163 | * 7x AC power outlet |
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164 | 13 | laforge | * 7x Ethernet switch port (one of which supports 10 MBps!) |
165 | 11 | laforge | ** some ports in a new VLAN |
166 | ** some ports in an existing VLAN of my other servers in Rack 1120 |
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167 | * 1x CAT5 between rack and roof |
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168 | * about 10cm of space on DIN-rail on roof enclosure (to mount OVP + GPS03) |
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169 | |||
170 | h2. Questions |
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171 | 1 | laforge | |
172 | 12 | laforge | * Required antenna cable length between rooftop enclosure and antenna |
173 | * Mechanical antenna mounting details |
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174 | 11 | laforge | * detailed switch port / VLAN config |