Hi,
I'm trying to manually decode a PDU (BER encoded) for InitialDP (from the
CAMELph2 message set). I'm trying this after quite some time, so my question
might seem very basic.
I went thru the CAMELph2 ASN.1 abstract specification, and while I was trying
to locate the op-code for InitialDP operation, I came accross the following
(from GSM 09.78 version 6.2.1 Release 1997 spec):-
<specification>
CAP-Codes {ccitt(0) identified-organization(4) etsi(0) mobileDomain(0)
gsm-Network(1) modules(3)cap-
-codes(53) version2(1)}
-- This module contains the operation and error code assignments for the CAP
v.2 application
-- protocol.
DEFINITIONS ::=
BEGIN
-- OPERATION AND ERROR CODE ASSIGNMENTS FOR THE CAP v.2 PROTOCOL FOLLOWS IMPORTS
-- operation types
ActivityTest,
ApplyCharging,
ApplyChargingReport,
AssistRequestInstructions,
CallInformationReport,
CallInformationRequest,
Cancel,
Connect,
ConnectToResource,
Continue,
DisconnectForwardConnection,
EstablishTemporaryConnection,
EventReportBCSM,
FurnishChargingInformation,
InitialDP,
PlayAnnouncement,
PromptAndCollectUserInformation,
ReleaseCall,
RequestReportBCSMEvent,
ResetTimer,
SendChargingInformation,
SpecializedResourceReport
FROM CAP-Operations { ccitt(0) identified-organization(4) etsi(0)
mobileDomain(0) gsm-Network(1)
modules(3) cap-operations(50) version2(1)}
-- CS1 error types
Cancelled,
CancelFailed,
ETCFailed,
ImproperCallerResponse,
MissingCustomerRecord,
MissingParameter,
ParameterOutOfRange,
RequestedInfoError,
TaskRefused,
UnavailableResource,
UnexpectedComponentSequence,
UnexpectedDataValue,
UnexpectedParameter,
UnknownLegID
FROM Core-INAP-CS1-Errors {ccitt(0) identified-organization(4) etsi(0)
inDomain(1) in-network(1)
modules(0) cs1-errors(1) version2(1)}
-- CAP error types
SystemFailure
FROM CAP-Errors {ccitt(0) identified-organization(4) etsi(0) mobileDomain(0)
gsm-Network(1)
modules(3) cap-errors(51) version2(1)};
-- the operations are grouped by the identified ASEs.
--
-- gsmSCF activation ASE
initialDP InitialDP ::= localValue 0
</specification>
Now, from this, how can I make out the op-code for InitialDP ??
In case of AIN0.1 specifications the op-codes for the various operations was
presented in a tabular format, but in this case I am unable to make it out. Can
someone help on how to go about it ? I mean I do not have any information as to
the tagging being EXPLICIT or IMPLICIT, the class being PRIVATE or APPLICATION
etc ?
thanks & regards,
Banibrata.
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