add erlang MAP code (from OTP)
diff --git a/asn1/MAP-GR-DataTypes.asn b/asn1/MAP-GR-DataTypes.asn
new file mode 100644
index 0000000..8ceeea1
--- /dev/null
+++ b/asn1/MAP-GR-DataTypes.asn
@@ -0,0 +1,122 @@
+MAP-GR-DataTypes {
+ itu-t identified-organization (4) etsi (0) mobileDomain (0)
+ gsm-Network (1) modules (3) map-GR-DataTypes (23) version9 (9)}
+
+DEFINITIONS
+
+IMPLICIT TAGS
+
+::=
+
+BEGIN
+
+EXPORTS
+ PrepareGroupCallArg,
+ PrepareGroupCallRes,
+ SendGroupCallEndSignalArg,
+ SendGroupCallEndSignalRes,
+ ForwardGroupCallSignallingArg,
+ ProcessGroupCallSignallingArg
+;
+
+IMPORTS
+ ISDN-AddressString,
+ IMSI,
+ EMLPP-Priority,
+ ASCI-CallReference
+FROM MAP-CommonDataTypes {
+ itu-t identified-organization (4) etsi (0) mobileDomain (0)
+ gsm-Network (1) modules (3) map-CommonDataTypes (18) version9 (9)}
+
+ Ext-TeleserviceCode
+FROM MAP-TS-Code {
+ itu-t identified-organization (4) etsi (0) mobileDomain (0)
+ gsm-Network (1) modules (3) map-TS-Code (19) version9 (9)}
+
+ Kc
+FROM MAP-MS-DataTypes {
+ itu-t identified-organization (4) etsi (0) mobileDomain (0)
+ gsm-Network (1) modules (3) map-MS-DataTypes (11) version9 (9)}
+
+ ExtensionContainer
+FROM MAP-ExtensionDataTypes {
+ itu-t identified-organization (4) etsi (0) mobileDomain (0)
+ gsm-Network (1) modules (3) map-ExtensionDataTypes (21) version9 (9)}
+;
+
+
+PrepareGroupCallArg ::= SEQUENCE {
+ teleservice Ext-TeleserviceCode,
+ asciCallReference ASCI-CallReference,
+ codec-Info CODEC-Info,
+ cipheringAlgorithm CipheringAlgorithm,
+ groupKeyNumber [0] GroupKeyNumber OPTIONAL,
+ groupKey [1] Kc OPTIONAL,
+ priority [2] EMLPP-Priority OPTIONAL,
+ uplinkFree [3] NULL OPTIONAL,
+ extensionContainer [4] ExtensionContainer OPTIONAL,
+ ...}
+
+PrepareGroupCallRes ::= SEQUENCE {
+ groupCallNumber ISDN-AddressString,
+ extensionContainer ExtensionContainer OPTIONAL,
+ ...}
+
+SendGroupCallEndSignalArg ::= SEQUENCE {
+ imsi IMSI OPTIONAL,
+ extensionContainer ExtensionContainer OPTIONAL,
+ ...}
+
+SendGroupCallEndSignalRes ::= SEQUENCE {
+ extensionContainer ExtensionContainer OPTIONAL,
+ ...}
+
+ForwardGroupCallSignallingArg ::= SEQUENCE {
+ imsi IMSI OPTIONAL,
+ uplinkRequestAck [0] NULL OPTIONAL,
+ uplinkReleaseIndication [1] NULL OPTIONAL,
+ uplinkRejectCommand [2] NULL OPTIONAL,
+ uplinkSeizedCommand [3] NULL OPTIONAL,
+ uplinkReleaseCommand [4] NULL OPTIONAL,
+ extensionContainer ExtensionContainer OPTIONAL,
+ ...,
+ stateAttributes [5] StateAttributes OPTIONAL }
+
+ProcessGroupCallSignallingArg ::= SEQUENCE {
+ uplinkRequest [0] NULL OPTIONAL,
+ uplinkReleaseIndication [1] NULL OPTIONAL,
+ releaseGroupCall [2] NULL OPTIONAL,
+ extensionContainer ExtensionContainer OPTIONAL,
+ ...}
+
+GroupKeyNumber ::= INTEGER (0..15)
+
+CODEC-Info ::= OCTET STRING (SIZE (5..10))
+ -- Refers to channel type
+ -- coded according to 3GPP TS 48.008 [49] and including Element identifier and Length
+
+CipheringAlgorithm ::= OCTET STRING (SIZE (1))
+ -- Refers to 'permitted algorithms' in 'encryption information'
+ -- coded according to 3GPP TS 48.008 [49]:
+
+ -- Bits 8-1
+ -- 8765 4321
+ -- 0000 0001 No encryption
+ -- 0000 0010 GSM A5/1
+ -- 0000 0100 GSM A5/2
+ -- 0000 1000 GSM A5/3
+ -- 0001 0000 GSM A5/4
+ -- 0010 0000 GSM A5/5
+ -- 0100 0000 GSM A5/6
+ -- 1000 0000 GSM A5/7
+
+StateAttributes ::= SEQUENCE {
+ downlinkAttached [5] NULL OPTIONAL,
+ uplinkAttached [6] NULL OPTIONAL,
+ dualCommunication [7] NULL OPTIONAL,
+ callOriginator [8] NULL OPTIONAL }
+
+ -- Refers to 3GPP TS 44.068 for definitions of StateAttributes fields.
+
+
+END