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gsm48_ie.c: add 3.1kHz audio bearer capability for CSD calls 

GSM48_BCAP_ITCAP_3k1_AUDIO should be handled just like fax or
unregistricted digital CSD calls. The transfer capability just
indicates that an (external) interworking function should convert
the call into an analog modem call on the network edge.
The CSD call is still regular V.110/RLP non-transparent data.

Change-Id: I44b76be0f6a891bc1d8f55ede1ef140ea0a19e3d
This commit is contained in:
Manawyrm 2023-10-14 16:46:22 +02:00 committed by laforge
parent 1584b2ac39
commit de776d7bc0
1 changed files with 2 additions and 0 deletions
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2
src/gsm/gsm48_ie.c
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@ -233,6 +233,7 @@ int gsm48_decode_bearer_cap(struct gsm_mncc_bearer_cap *bcap,
}
break;
case GSM_MNCC_BCAP_UNR_DIG:
case GSM_MNCC_BCAP_AUDIO:
case GSM_MNCC_BCAP_FAX_G3:
i = 1;
while (!(lv[i] & 0x80)) {
@ -334,6 +335,7 @@ int gsm48_encode_bearer_cap(struct msgb *msg, int lv_only,
lv[i] |= 0x80; /* last IE of octet 3 etc */
break;
case GSM48_BCAP_ITCAP_UNR_DIG_INF:
case GSM48_BCAP_ITCAP_3k1_AUDIO:
case GSM48_BCAP_ITCAP_FAX_G3:
lv[i++] |= 0x80; /* last IE of octet 3 etc */
/* octet 4 */