Linux Grand Unified ISDN Theory » History » Version 1
laforge, 09/18/2022 03:49 PM
| 1 | 1 | laforge | h1. Linux Grand Unified ISDN Theory |
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| 2 | |||
| 3 | This is some random ideas about how to achieve some kind of _grand unified_ scheme of ISDN drivers on Linux, where one can write an application that works wity virtually all available ISDN adapters out there |
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| 5 | h2. existing method of using CAPI application against mISDN supported hardware |
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| 7 | {{graphviz_link() |
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| 8 | digraph G { |
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| 9 | application [label="application linked\nagainst libcapi20"]; |
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| 10 | capid [label="capid using mISDN plugin"]; |
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| 11 | mISDNuser [label="mISDNuser\nCAPI intf + Q.931"]; |
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| 12 | mISDN [label="mISDN in kernel\nQ.921 + drivers"]; |
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| 13 | |||
| 14 | subgraph cluster_hw { |
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| 15 | label = "Kernel"; |
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| 16 | hfcs [label="HFC-S (PCI)"]; |
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| 17 | hfce1 [label="HFC-E1 (PCI)"]; |
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| 18 | hfcusb [label="HFC-S (USB)"]; |
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| 19 | |||
| 20 | mISDN -> hfcs; |
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| 21 | mISDN -> hfce1; |
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| 22 | mISDN -> hfcusb; |
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| 23 | } |
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| 24 | |||
| 25 | application -> capid; |
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| 26 | capid -> mISDNuser; |
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| 27 | mISDNuser -> mISDN [label="PF_ISDN socket"] |
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| 28 | |||
| 29 | } |
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| 30 | }} |
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| 31 | |||
| 32 | h2. proposed method of using CAPI application against hardware with DAHDI drivers |
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| 33 | |||
| 34 | {{graphviz_link() |
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| 35 | digraph G { |
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| 36 | application [label="application linked\nagainst libcapi20"]; |
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| 37 | capid [label="capid using mISDN plugin"]; |
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| 38 | mISDNuser [label="mISDNuser\nCAPI intf + Q.931"]; |
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| 39 | mISDNdahdi [label="mISDNdahdi\nQ.921 + DAHDI interface",color=red,style=dashed]; |
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| 40 | dahdi [label="DAHDI in kernel"]; |
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| 41 | |||
| 42 | subgraph cluster_hw { |
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| 43 | label = "Kernel"; |
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| 44 | digium [label="Digium 1/2/4/8port E1/T1 (PCI or PCIe)"]; |
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| 45 | icE1usb [label="icE1usb (USB)"]; |
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| 46 | trunkdev [label="trunkdev (TDMoIP)"]; |
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| 47 | |||
| 48 | dahdi -> digium; |
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| 49 | dahdi -> icE1usb; |
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| 50 | dahdi -> trunkdev; |
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| 51 | } |
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| 52 | |||
| 53 | application -> capid; |
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| 54 | capid -> mISDNuser; |
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| 55 | mISDNuser -> mISDNdahdi; |
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| 56 | mISDNdahdi -> dahdi [label="/dev/dahdi/..."]; |
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| 57 | |||
| 58 | } |
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| 59 | }} |
