CSD » History » Version 3
fixeria, 01/25/2024 11:01 PM
add support state and limitations
1 | 1 | fixeria | h1. CSD (Circuit Switched Data) |
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3 | {{>toc}} |
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5 | This page documents Circuit Switched Data support in the [[mobile]] application (see #4396). |
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6 | 2 | fixeria | |
7 | h2. L1 PHY support |
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9 | At the time of writing this wiki page, CSD support is implemented for the following L1 PHYs: |
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11 | * [[Layer1bin]] firmware for [[Phones#TI-Calypso-based|Calypso based phones]] |
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12 | * SDR PHY ([[osmotrx:|osmo-trx-ms]]) + [[TRX_Interface#The-trxcon-application|trxcon]] application |
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13 | * SDR PHY ([[osmocom-bb-sdr-phy:|grgsm_trx]]) + [[TRX_Interface#The-trxcon-application|trxcon]] application |
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14 | * [[FakeTRX]] (virtual Um) + [[TRX_Interface#The-trxcon-application|trxcon]] application |
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15 | 3 | fixeria | |
16 | h2. L23 support state |
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18 | * async (soft-UART) transparent V.110 calls |
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19 | * [not tested] sync transparent V.110 calls |
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20 | ** [not tested] including fax calls |
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21 | * TCH/F9.4, TCH/F4.8, TCH/F2.4 (only @ 2400 bps) |
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22 | * [not tested] TCH/H4.8, TCH/H2.4 (only @ 2400 bps) |
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24 | h3. TODO/limitations |
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26 | * non-transparent calls (V.110 RLP, V.120) |
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27 | * TCH/F14.4 (see also #6167) |
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28 | * TCH/F2.4 and TCH/H2.4 @ 300 bps, 1200/75 bps |
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29 | * ECSD (multi-TCH support) |
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30 | * "CUSE (Character devices in user space)":https://lwn.net/Articles/308445/ |