Libosmo-abis » History » Version 5
fixeria, 09/25/2018 06:55 PM
1 | 1 | laforge | h1. libosmo-abis |
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2 | 3 | laforge | |
3 | 4 | fixeria | {{>toc}} |
4 | 3 | laforge | |
5 | 5 | fixeria | This is a library containing common/shared code regarding the A-bis interface between BTS and BSC. |
6 | It implements drivers for mISDN and DAHDI based E1 cards, as well as some A-bis/IP dialects. |
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7 | 1 | laforge | |
8 | 5 | fixeria | The library source code can be found in: |
9 | 1 | laforge | |
10 | 3 | laforge | <pre> |
11 | git clone git://git.osmocom.org/libosmo-abis.git |
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12 | 1 | laforge | </pre> |
13 | 3 | laforge | |
14 | h2. Input Drivers |
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15 | 2 | laforge | |
16 | There are currently the following input drivers available: |
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17 | |||
18 | 3 | laforge | h3. misdn |
19 | 1 | laforge | |
20 | 3 | laforge | This input driver supports the mISDN code as it is present in mainline linux-2.6 kernels. |
21 | |||
22 | 1 | laforge | It uses the in-kernel LAPD implementation, and is thus bound to some restrictions. Specifically, |
23 | 5 | fixeria | you can only have one signalling timeslot (D-channel) in every E1 line, which may cause problems |
24 | 2 | laforge | with multi-BTS or multi-TRX setups (particularly in the case of Nokia A-bis) |
25 | 1 | laforge | |
26 | 5 | fixeria | You have to configure which E1 timeslot is to be used for signalling by module parameters, e.g. |
27 | |||
28 | 3 | laforge | <pre> |
29 | 1 | laforge | modprobe hfcmulti dslot=1 |
30 | 3 | laforge | </pre> |
31 | 2 | laforge | |
32 | 5 | fixeria | will configure TS1 as signalling. |
33 | 1 | laforge | |
34 | 3 | laforge | h3. misdn_lapd |
35 | |||
36 | 1 | laforge | This input driver supports the mISDN code as it is present in mainline linux-2.6 kernels. |
37 | However, unlike the "misdn" driver, it runs LAPD in userspace, as part of libosmo-abis. |
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38 | |||
39 | 2 | laforge | In order to be able to use it, you will need to make sure the mISDN kernel driver does not |
40 | 5 | fixeria | configure any timeslot to signalling, e.g. |
41 | |||
42 | 1 | laforge | <pre> |
43 | 2 | laforge | modprobe hfcmulti dslot=-1 |
44 | 1 | laforge | </pre> |
45 | 3 | laforge | |
46 | 5 | fixeria | (notice the "-" in front of 1 to indicate "no signalling timeslot"). |
47 | 2 | laforge | |
48 | h3. dahdi |
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49 | |||
50 | 3 | laforge | This driver supports the DAHDI (formerly known as zaptel) out-of-tree drivers for e.g. |
51 | the various Digium and Digium compatible E1/T1/J1 cards. |
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52 | |||
53 | 2 | laforge | h3. ipa |
54 | |||
55 | 3 | laforge | This implements the ip.access A-bis/IP multiplex protocol. |
56 | |||
57 | h3. hsl |
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58 | 2 | laforge | |
59 | Experimental driver for support of the [HSL_Femto] |