Libosmo-abis » History » Version 3
laforge, 02/19/2016 10:48 PM
add some information on the input drivers
1 | 3 | laforge | {{>toc}} |
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2 | 1 | laforge | |
3 | 3 | laforge | h1. libosmo-abis |
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6 | 1 | laforge | This is a library containing common/shared code regarding the A-bis interface between BTS and BSC |
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8 | It implements drivers for mISDN and DAHDI based E1 cards, as well as some A-bis/IP dialects |
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10 | The library source code can be found in |
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11 | 3 | laforge | <pre> |
12 | 1 | laforge | git clone git://git.osmocom.org/libosmo-abis.git |
13 | 3 | laforge | </pre> |
14 | 1 | laforge | |
15 | 2 | laforge | |
16 | 3 | laforge | h2. Input Drivers |
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19 | 2 | laforge | There are currently the following input drivers available: |
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22 | 3 | laforge | h3. misdn |
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25 | 1 | laforge | This input driver supports the mISDN code as it is present in mainline linux-2.6 kernels. |
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27 | 2 | laforge | It uses the in-kernel LAPD implementation, and is thus bound to some restrictions. Specifically, |
28 | you can only have one signaling timeslot (D-channel) in every E1 line, which may cause problems |
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29 | 1 | laforge | with multi-BTS or multi-TRX setups (particularly in the case of Nokia A-bis) |
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31 | You have to configure which E1 timeslot is to be used for signaling by module parameters, e.g. |
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32 | 3 | laforge | <pre> |
33 | 2 | laforge | modprobe hfcmulti dslot=1 |
34 | 3 | laforge | </pre> |
35 | 2 | laforge | will configure TS1 as signaling. |
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37 | 1 | laforge | |
38 | 3 | laforge | h3. misdn_lapd |
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41 | 1 | laforge | This input driver supports the mISDN code as it is present in mainline linux-2.6 kernels. |
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43 | However, unlike the "misdn" driver, it runs LAPD in userspace, as part of libosmo-abis. |
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44 | 2 | laforge | |
45 | In order to be able to use it, you will need to make sure the mISDN kernel driver does not |
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46 | configure any timeslot to signaling, e.g. bh |
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47 | 3 | laforge | <pre> |
48 | 1 | laforge | modprobe hfcmulti dslot=-1 |
49 | 3 | laforge | </pre> |
50 | 2 | laforge | (notice the "-" in front of 1 to indicate "no signaling timeslot"). |
51 | 1 | laforge | |
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53 | 3 | laforge | h3. dahdi |
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56 | 2 | laforge | This driver supports the DAHDI (formerly known as zaptel) out-of-tree drivers for e.g. |
57 | the various Digium and Digium compatible E1/T1/J1 cards. |
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59 | |||
60 | 3 | laforge | h3. ipa |
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63 | 2 | laforge | This implements the ip.access A-bis/IP multiplex protocol. |
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65 | 3 | laforge | |
66 | h3. hsl |
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67 | |||
68 | 2 | laforge | |
69 | Experimental driver for support of the [HSL_Femto] |