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authorHarald Welte <laforge@gnumonks.org>2017-07-19 19:57:26 +0200
committerHarald Welte <laforge@gnumonks.org>2017-07-19 19:57:26 +0200
commit3b8bdd63580a10b74c7556bd8fb6e2629e6b5734 (patch)
tree3938ad8f3c0887b654b4a5b856dcfe9fe328ef56 /library/GSM_Types.ttcn
parent599faa1d1882cc35114c88727714e51a6a1bad95 (diff)
Introduce 'library' directory for modules shared by multiple test cases
Diffstat (limited to 'library/GSM_Types.ttcn')
-rw-r--r--library/GSM_Types.ttcn587
1 files changed, 587 insertions, 0 deletions
diff --git a/library/GSM_Types.ttcn b/library/GSM_Types.ttcn
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+/* Encoding/Decoding routines for GSM System Information messages
+ * according to 3GPP TS 44.018 Version 12.3.0 Release 12 */
+
+/* (C) 2017 by Harald Welte <laforge@gnumonks.org> */
+
+module GSM_Types {
+
+ import from General_Types all;
+ import from Osmocom_Types all;
+
+ type integer GsmArfcn (0..1023);
+ type integer UmtsArfcn (0..16383);
+ type integer UmtsScramblingCode (0..511);
+ const integer GsmMaxFrameNumber := 26*51*2048;
+ type integer GsmFrameNumber (0..GsmMaxFrameNumber);
+ type integer GsmRxLev (0..63);
+ type integer GsmTsc (0..7) with { variant "FIELDLENGTH(8)" };
+ type uint32_t GsmTmsi;
+
+ /* Table 10.4.1 of Section 10.4 / 3GPP TS 44.018 */
+ type enumerated RrMessageType {
+ ADDITIONAL_ASSIGNMENT ('00111011'B),
+ IMMEDIATE_ASSIGNMENT ('00111111'B),
+ IMMEDIATE_ASSIGNMENT_EXTENDED ('00111001'B),
+ IMMEDIATE_ASSIGNMENT_REJECT ('00111010'B),
+ IMMEDIATE_PACKET_ASSIGNMENT ('01101001'B),
+
+ CIPHERING_MODE_COMMAND ('00110101'B),
+ CIPHERING_MODE_COMPLETE ('00110010'B),
+
+ CONFIGURATION_CHANGE_COMMAND ('00110000'B),
+ CONFIGURATION_CHANGE_ACK ('00110001'B),
+ CONFIGURATION_CHANGE_REJECT ('00110011'B),
+
+ ASSIGNMENT_COMMAND ('00101110'B),
+ ASSIGNMENT_COMPLETE ('00101001'B),
+ ASSIGNMENT_FAILURE ('00101111'B),
+ HANDOVER_COMMAND ('00101011'B),
+ HANDOVER_COMPLETE ('00101100'B),
+ HANDOVER_FAILURE ('00101000'B),
+ PHYSICAL_INFORMATION ('00101101'B),
+
+ CHANNEL_RELEASE ('00001101'B),
+ PARTIAL_RELEASE ('00001010'B),
+ PARTIAL_RELEASE_COMPLETE ('00001111'B),
+
+ PAGING_REQUEST_TYPE_1 ('00100001'B),
+ PAGING_REQUEST_TYPE_2 ('00100010'B),
+ PAGING_REQUEST_TYPE_3 ('00100100'B),
+ PAGING_RESPONSE ('00100111'B),
+ NOTIFICATION_NCH ('00100000'B),
+ NOTIFICATION_RESPOSNE ('00100110'B),
+
+ SYSTEM_INFORMATION_TYPE_8 ('00011000'B),
+ SYSTEM_INFORMATION_TYPE_1 ('00011001'B),
+ SYSTEM_INFORMATION_TYPE_2 ('00011010'B),
+ SYSTEM_INFORMATION_TYPE_3 ('00011011'B),
+ SYSTEM_INFORMATION_TYPE_4 ('00011100'B),
+ SYSTEM_INFORMATION_TYPE_5 ('00011101'B),
+ SYSTEM_INFORMATION_TYPE_6 ('00011110'B),
+ SYSTEM_INFORMATION_TYPE_7 ('00011111'B),
+ SYSTEM_INFORMATION_TYPE_2bis ('00000010'B),
+ SYSTEM_INFORMATION_TYPE_2ter ('00000011'B),
+ SYSTEM_INFORMATION_TYPE_2quater ('00000111'B),
+ SYSTEM_INFORMATION_TYPE_5bis ('00000101'B),
+ SYSTEM_INFORMATION_TYPE_5ter ('00000110'B),
+ SYSTEM_INFORMATION_TYPE_9 ('00000100'B),
+ SYSTEM_INFORMATION_TYPE_13 ('00000000'B),
+
+ SYSTEM_INFORMATION_TYPE_16 ('00111101'B),
+ SYSTEM_INFORMATION_TYPE_17 ('00111110'B),
+
+ CHANNEL_MODE_MODIFY ('00010000'B),
+ RR_STATUS ('00010010'B),
+ CHANNEL_MODE_MODIFY_ACKNOWLEDGE ('00010111'B),
+ FREQUENCY_REDEFINITION ('00010100'B),
+ MEASUREMENT_REPORT ('00010101'B),
+ CLASSMARK_CHANGE ('00010110'B),
+ CLASSMARK_ENQUIRY ('00010011'B),
+ EXTENDED_MEASUREMENT_REPORT ('00110110'B),
+ EXTENDED_MEASUREMENT_ORDER ('00110111'B),
+ GPRS_SUSPENSION_REQUEST ('00110100'B),
+ //MBMS_ANNOUNCEMENT ('00010110'B), duplicate?
+ //SERVICE_INFORMATION ('00110110'B), duplicate?
+
+ APPLICATION_INFORMATION ('00111000'B),
+
+ SYSTEM_INFORMATION_TYPE_14 ('00000001'B),
+ SYSTEM_INFORMATION_TYPE_15 ('01000011'B),
+ SYSTEM_INFORMATION_TYPE_18 ('01000000'B),
+ SYSTEM_INFORMATION_TYPE_19 ('01000001'B),
+ SYSTEM_INFORMATION_TYPE_20 ('01000010'B),
+ SYSTEM_INFORMATION_TYPE_13alt ('01000100'B),
+ SYSTEM_INFORMATION_TYPE_2n ('01000101'B),
+ SYSTEM_INFORMATION_TYPE_21 ('01000110'B),
+ SYSTEM_INFORMATION_TYPE_22 ('01000111'B),
+ SYSTEM_INFORMATION_TYPE_23 ('01001111'B),
+
+ DTM_ASSIGNMENT_FAILURE ('01001000'B),
+ DTM_REJECT ('01001001'B),
+ DTM_REQUEST ('01001010'B),
+ PACKET_ASSIGNMENT ('01001011'B),
+ DTM_ASSIGNMENT_COMMAND ('01001100'B),
+ DTM_INFORMATION ('01001101'B),
+ PACKET_INFORMATION ('01001110'B),
+
+ UTRAN_CLASSMARK_CHANGE ('01100000'B),
+ CDMA2000_CLASSMARK_CHANGE ('01100010'B),
+ INTERSYS_TO_UTRAN_HO_CMD ('01100011'B),
+ INTERSYS_TO_CDMA2000_HO_CMD ('01100100'B),
+ GERAN_IU_MODE_CLASSMARK_CHG ('01100101'B),
+ INTERSYS_TO_EUTRAN_HO_CMD ('01100110'B)
+ } with { variant "FIELDLENGTH(8)" };
+
+ type octetstring RestOctets with { variant "PADDING(yes), PADDING_PATTERN('00101011'B)" };
+ type hexstring GsmBcdString with { variant "HEXORDER(low)" };
+ type GsmBcdString BcdMccMnc with { variant "FIELDLENGTH(6)" };
+
+ type record L2PseudoLength {
+ uint6_t l2_plen,
+ BIT2 zero_one
+ } with { variant "" };
+
+ template L2PseudoLength t_L2Pseudolength(template uint6_t len) := {
+ l2_plen := len,
+ zero_one := '01'B
+ };
+
+ type record RrHeader {
+ L2PseudoLength l2_plen,
+ uint4_t skip_indicator,
+ uint4_t rr_protocol_discriminator,
+ RrMessageType message_type
+ } with { variant "" };
+
+ template RrHeader t_RrHeader(RrMessageType msg_type, template uint6_t len) := {
+ l2_plen := t_L2Pseudolength(len),
+ skip_indicator := 0,
+ rr_protocol_discriminator := 6,
+ message_type := msg_type
+ };
+
+ type record RrL3Header {
+ uint4_t skip_indicator,
+ uint4_t rr_protocol_discriminator,
+ RrMessageType message_type
+ } with { variant "" };
+
+ type record MaioHsn {
+ } with { variant "" };
+
+ /* TS 24.008 10.5.1.2 */
+ type uint4_t CipheringKeySeqNr (0..7);
+
+ /* 24.008 10.5.1.3 */
+ type record LocationAreaIdentification {
+ BcdMccMnc mcc_mnc,
+ uint16_t lac
+ } with { variant "" };
+
+ /* TS 24.008 10.5.1.4 */
+ type enumerated MobileIdentityType {
+ MI_TYPE_NONE (0),
+ MI_TYPE_IMSI,
+ MI_TYPE_IMEI,
+ MI_TYPE_IMEISV,
+ MI_TYPE_TMSI,
+ MI_TYPE_TMGI
+ } with { variant "FIELDLENGTH(3)" };
+
+ type record MobileIdentityBCD {
+ MobileIdentityType mi_type (MI_TYPE_IMSI, MI_TYPE_IMEI, MI_TYPE_IMEISV),
+ boolean odd,
+ hexstring digits
+ } with { variant "" };
+
+ type record MobileIdentityTMSI {
+ BIT4 pad ('1111'B),
+ boolean odd (false),
+ MobileIdentityType mi_type (MI_TYPE_TMSI),
+ GsmTmsi tmsi
+ } with { variant "" };
+
+ type record MobileIdentityNone {
+ BIT4 pad ('1111'B),
+ boolean odd (false),
+ MobileIdentityType mi_type (MI_TYPE_NONE)
+ } with { variant "" };
+
+ type union MobileIdentity {
+ MobileIdentityBCD bcd,
+ MobileIdentityTMSI tmsi,
+ MobileIdentityNone unused
+ } with { variant "TAG(bcd, mi_type = MI_TYPE_IMSI;
+ bcd, mi_type = MI_TYPE_IMEI;
+ bcd, mi_type = MI_TYPE_IMEISV;
+ tmsi, mi_type = MI_TYPE_TMSI;
+ unused, mi_type = MI_TYPE_NONE)" };
+
+ type record MobileIdentityLV {
+ uint8_t len,
+ MobileIdentity mi
+ } with { variant (len) "LENGTHTO(mi)" };
+
+ type record MobileIdentityTLV {
+ uint8_t tag,
+ uint8_t len,
+ MobileIdentity mi
+ } with { variant (len) "LENGTHTO(mi)" };
+
+ /* TS 24.008 10.5.1.5 */
+ type record MsClassmark1 {
+ BIT1 spare,
+ uint2_t rev_level,
+ boolean es_ind,
+ boolean a51,
+ uint3_t rf_pwr_cap
+ } with { variant "" };
+
+ /* TS 24.008 10.5.1.6 */
+ type record MsClassmark2 {
+ BIT1 spare,
+ uint2_t rev_level,
+ boolean es_ind,
+ boolean a51,
+ uint3_t rf_pwr_cap,
+ BIT1 spare1,
+ boolean ps_cap,
+ uint2_t ss_screen_ind,
+ boolean sm_cap,
+ boolean vbs,
+ boolean vgcs,
+ boolean fc,
+ boolean cm3,
+ BIT1 spare2,
+ boolean lcsva_cap,
+ boolean ucs2,
+ boolean solsa,
+ boolean cmsp,
+ boolean a53,
+ boolean a52
+ } with { variant "" };
+ type record MsClassmark2LV {
+ uint8_t len,
+ MsClassmark2 cm2
+ } with { variant (len) "LENGTHTO(cm2)" };
+
+
+ /* 44.018 10.5.2.5 */
+ type record ChannelDescription {
+ RslChannelNr chan_nr,
+ uint3_t tsc,
+ boolean h,
+ uint12_t arfcn optional,
+ MaioHsn maio_hsn optional
+ } with { variant (arfcn) "PRESENCE(h = false)"
+ variant (maio_hsn) "PRESENCE(h = true)" };
+
+ type record ChannelDescriptionTV {
+ OCT1 iei,
+ ChannelDescription v
+ } with { variant "" };
+
+ /* 10.5.2.8 */
+ type enumerated ChannelNeeded {
+ CHAN_NEED_ANY (0),
+ CHAN_NEED_SDCCH (1),
+ CHAN_NEED_TCH_F (2),
+ CHAN_NEED_TCH_H (3)
+ } with { variant "FIELDLENGTH(2)" };
+ type record ChannelNeeded12 {
+ ChannelNeeded second,
+ ChannelNeeded first
+ } with { variant "" };
+
+ /* 10.5.2.21 */
+ type record MobileAllocation {
+ uint8_t len,
+ bitstring ma
+ } with { variant (len) "LENGTHTO(ma)" };
+
+ /* 10.5.2.25a */
+ type OCT3 PacketChannelDescription;
+
+ /* 10.5.2.25b */
+ type record DedicatedModeOrTbf {
+ BIT1 spare,
+ boolean tma,
+ boolean downlink,
+ boolean tbf
+ } with { variant "" };
+
+ /* 10.5.2.26 */
+ type enumerated PageMode {
+ PAGE_MODE_NORMAL,
+ PAGE_MODE_EXTENDED,
+ PAGE_MODE_REORGANIZATION,
+ PAGE_MODE_SAME_AS_BEFORE
+ } with { variant "FIELDLENGTH(4)" };
+
+ /* 10.5.2.30 */
+ type record RequestReference {
+ bitstring ra length(8),
+ uint5_t t1p,
+ uint6_t t3,
+ uint5_t t2
+ } with { variant "" };
+
+ template RequestReference t_RequestReference(template bitstring ra, template uint5_t t1p, template uint6_t t3, template uint5_t t2) := {
+ ra := ra,
+ t1p := t1p,
+ t3 := t3,
+ t2 := t2
+ }
+
+ /* compute the expected request reference for given RA + FN */
+ function f_compute_ReqRef(uint8_t ra, GsmFrameNumber fn) return RequestReference {
+ var RequestReference req_ref := { ra := int2bit(ra, 8) };
+ req_ref.t1p := (fn / 1326) mod 32;
+ req_ref.t2 := fn mod 26;
+ req_ref.t3 := fn mod 51;
+ return req_ref
+ }
+
+ /* 10.5.2.40 */
+ type integer TimingAdvance (0..219);
+
+ /* 10.5.2.43 */
+ type uint8_t WaitIndication;
+
+ /* 10.5.2.76 */
+ type record FeatureIndicator {
+ BIT2 spare,
+ boolean cs_ir,
+ boolean ps_ir
+ } with { variant "" };
+
+
+ /* 9.1.18 */
+ type record ImmediateAssignment {
+ DedicatedModeOrTbf ded_or_tbf,
+ PageMode page_mode,
+ ChannelDescription chan_desc optional,
+ PacketChannelDescription pkt_chan_desc optional,
+ RequestReference req_ref,
+ TimingAdvance timing_advance,
+ MobileAllocation mobile_allocation
+ } with { variant (chan_desc) "PRESENCE(ded_or_tbf.tbf = false)"
+ variant (pkt_chan_desc) "PRESENCE(ded_or_tbf.tbf = true)" };
+
+ /* 9.1.20 */
+ type record ReqRefWaitInd {
+ RequestReference req_ref,
+ WaitIndication wait_ind
+ } with { variant "" };
+ type record length(4) of ReqRefWaitInd ReqRefWaitInd4;
+ type record ImmediateAssignmentReject {
+ FeatureIndicator feature_ind,
+ PageMode page_mode,
+ ReqRefWaitInd4 payload
+ } with { variant "" };
+
+ /* 9.1.22 */
+ type record PagingRequestType1 {
+ ChannelNeeded12 chan_needed,
+ PageMode page_mode,
+ MobileIdentityLV mi1,
+ MobileIdentityTLV mi2 optional,
+ RestOctets rest_octets
+ } with { variant "TAG(mi2, tag = 23)" };
+
+ /* 9.1.23 */
+ type record PagingRequestType2 {
+ ChannelNeeded12 chan_needed,
+ PageMode page_mode,
+ GsmTmsi mi1,
+ GsmTmsi mi2,
+ MobileIdentityTLV mi3 optional,
+ RestOctets rest_octets
+ } with { variant "TAG(mi3, tag = 23)" };
+
+ /* 9.1.24 */
+ type record length(4) of GsmTmsi GsmTmsi4;
+ type record PagingRequestType3 {
+ ChannelNeeded12 chan_needed,
+ PageMode page_mode,
+ GsmTmsi4 mi,
+ RestOctets rest_octets
+ } with { variant "" };
+
+
+ type union RrUnion {
+/*
+ SystemInformationType1 si1,
+ SystemInformationType2 si2,
+ SystemInformationType2bis si2bis,
+ SystemInformationType2ter si2ter,
+ SystemInformationType3 si3,
+ SystemInformationType4 si4,
+ SystemInformationType5 si5,
+ SystemInformationType5bis si5bis,
+ SystemInformationType5ter si5ter,
+ SystemInformationType6 si6,
+*/
+ ImmediateAssignment imm_ass,
+ ImmediateAssignmentReject imm_ass_rej,
+ PagingRequestType1 pag_req_1,
+ PagingRequestType2 pag_req_2,
+ PagingRequestType3 pag_req_3,
+ octetstring other
+ } with { variant "" };
+
+ /* Special RR Message on BCCH / CCCH Dowlink */
+
+ type record GsmRrMessage {
+ RrHeader header,
+ RrUnion payload
+ } with { variant (payload) "CROSSTAG(
+/*
+ si1, header.message_type = SYSTEM_INFORMATION_TYPE_1;
+ si2, header.message_type = SYSTEM_INFORMATION_TYPE_2;
+ si2bis, header.message_type = SYSTEM_INFORMATION_TYPE_2bis;
+ si2ter, header.message_type = SYSTEM_INFORMATION_TYPE_2ter;
+ si3, header.message_type = SYSTEM_INFORMATION_TYPE_3;
+ si4, header.message_type = SYSTEM_INFORMATION_TYPE_4;
+ si5, header.message_type = SYSTEM_INFORMATION_TYPE_5;
+ si5bis, header.message_type = SYSTEM_INFORMATION_TYPE_5bis;
+ si5ter, header.message_type = SYSTEM_INFORMATION_TYPE_5ter;
+ si6, header.message_type = SYSTEM_INFORMATION_TYPE_6;
+*/
+ imm_ass, header.message_type = IMMEDIATE_ASSIGNMENT;
+ imm_ass_rej, header.message_type = IMMEDIATE_ASSIGNMENT_REJECT;
+ pag_req_1, header.message_type = PAGING_REQUEST_TYPE_1;
+ pag_req_2, header.message_type = PAGING_REQUEST_TYPE_2;
+ pag_req_3, header.message_type = PAGING_REQUEST_TYPE_3;
+ other, OTHERWISE;
+ )" };
+
+ external function enc_GsmRrMessage(in GsmRrMessage msg) return octetstring
+ with { extension "prototype(convert) encode(RAW)" };
+ external function dec_GsmRrMessage(in octetstring stream) return GsmRrMessage
+ with { extension "prototype(convert) decode(RAW)" };
+
+ /* Normal L3 Message on Dedicated Channel */
+
+ /* 9.1.25 Paging Response */
+ type record PagingResponse {
+ uint4_t spare_half_octet,
+ CipheringKeySeqNr cksn,
+ MsClassmark2LV cm2,
+ MobileIdentityLV mi,
+ uint8_t addl_upd_par optional
+ } with { variant "" };
+
+ type union RrL3Union {
+ PagingResponse paging_response,
+ octetstring other
+ };
+
+ type record GsmRrL3Message {
+ RrL3Header header,
+ RrL3Union payload
+ } with { variant (payload) "CROSSTAG(
+ paging_response, header.message_type = PAGING_RESPONSE;
+
+ other, OTHERWISE;
+ )" }
+
+ /* TS 48.058 9.3.1 Channel Number IE */
+ type enumerated RslChanNr0 {
+ RSL_CHAN_NR_INVALID ('00'H),
+ RSL_CHAN_NR_Bm_ACCH ('01'H),
+ RSL_CHAN_NR_BCCH ('10'H),
+ RSL_CHAN_NR_RACH ('11'H),
+ RSL_CHAN_NR_PCH_AGCH ('12'H)
+ } with { variant "FIELDLENGTH(5)" };
+
+ type record RslChanNr2 {
+ BIT4 tag ('0001'B),
+ uint1_t sub_chan
+ } with { variant "FIELDLENGTH(5)" };
+
+ type record RslChanNr4 {
+ BIT3 tag ('001'B),
+ uint2_t sub_chan
+ } with { variant "FIELDLENGTH(5)" };
+
+ type record RslChanNr8 {
+ BIT2 tag ('01'B),
+ uint3_t sub_chan
+ } with { variant "FIELDLENGTH(5)" };
+
+ type union RslChanNrU {
+ RslChanNr0 ch0,
+ RslChanNr2 lm,
+ RslChanNr4 sdcch4,
+ RslChanNr8 sdcch8
+ } with {
+ variant "TAG(lm, tag = '0001'B;
+ sdcch4, tag = '001'B;
+ sdcch8, tag = '01'B;
+ ch0, OTHERWISE)"
+ variant "FIELDLENGTH(5)"
+ };
+
+ type record RslChannelNr {
+ RslChanNrU u,
+ uint3_t tn
+ } with { variant "FIELDLENGTH(8)" };
+
+ template RslChannelNr t_RslChanNr0(template uint3_t tn, template RslChanNr0 cht) := {
+ u := { ch0 := cht },
+ tn := tn
+ }
+
+ template RslChannelNr t_RslChanNr_RACH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_RACH);
+ template RslChannelNr t_RslChanNr_BCCH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_BCCH);
+ template RslChannelNr t_RslChanNr_PCH_AGCH(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_PCH_AGCH);
+ template RslChannelNr t_RslChanNr_Bm(template uint3_t tn) := t_RslChanNr0(tn, RSL_CHAN_NR_Bm_ACCH);
+ template RslChannelNr t_RslChanNr_Lm(template uint3_t tn, uint1_t sub_slot) := {
+ u := { lm := { tag := '0001'B, sub_chan := sub_slot } },
+ tn := tn
+ }
+ template RslChannelNr t_RslChanNr_SDCCH4(template uint3_t tn, template uint2_t sub_slot) := {
+ u := { sdcch4 := { tag := '001'B, sub_chan := sub_slot } },
+ tn := tn
+ }
+ template RslChannelNr t_RslChanNr_SDCCH8(template uint3_t tn, template uint3_t sub_slot) := {
+ u := { sdcch8 := { tag := '01'B, sub_chan := sub_slot } },
+ tn := tn
+ }
+
+ /* TS 48.058 9.3.2 Link ID */
+ type enumerated RslLinkIdC {
+ FACCH_SDCCH (0),
+ SACCH (1)
+ } with { variant "FIELDLENGTH(2)" };
+
+ type enumerated RslSapi0Prio {
+ SAPI0_PRIO_NORMAL (0),
+ SAPI0_PRIO_HIGH (1),
+ SAPI0_PRIO_LOW (2)
+ } with { variant "FIELDLENGTH(2)" };
+
+ type uint3_t GsmSapi;
+
+ type record RslLinkId {
+ RslLinkIdC c,
+ boolean na,
+ RslSapi0Prio prio,
+ GsmSapi sapi
+ } with { variant "" };
+
+ template RslLinkId tr_RslLinkId := {
+ c := ?,
+ na := ?,
+ prio := ?,
+ sapi := ?
+ };
+
+ template RslLinkId tr_RslLinkID_DCCH(template GsmSapi sapi) modifies tr_RslLinkId := {
+ c := FACCH_SDCCH,
+ na := false,
+ sapi := sapi
+ };
+
+ template RslLinkId tr_RslLinkID_SACCH(template GsmSapi sapi) modifies tr_RslLinkId := {
+ c := SACCH,
+ na := false,
+ sapi := sapi
+ };
+
+ template RslLinkId ts_RslLinkID_DCCH(GsmSapi sapi) := {
+ c := FACCH_SDCCH,
+ na := false,
+ prio := SAPI0_PRIO_NORMAL,
+ sapi := sapi
+ };
+
+ template RslLinkId ts_RslLinkID_SACCH(GsmSapi sapi) := {
+ c := SACCH,
+ na := false,
+ prio := SAPI0_PRIO_NORMAL,
+ sapi := sapi
+ };
+
+} with { encode "RAW"; variant "FIELDORDER(msb)" }