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Protocol Error Between Bss And Msc

and how to troubleshoot this problem? All rights reserved. Connection-oriented Procedures of BSSMAP Procedures Messages Cipher mode control CIPHER MODE COMMAND CIPHER MODE COMPLETE Trace invocation MSC INVOKE TRACE BSS INVOKE TRACE Initial MS message COMPLETE LAYER 3 INFORMATION Queuing All rights reserved. click site

thanks Post a reply to this article Important noticeThis forum is rapidly turning into a document exchange medium. In case of a failure at a part of the MSC or BSS, the Clearing procedure can be used to erase the affected parts. VoIP Calculator Our entry level VoIP calculator allowing you to easily calculate your Voice over IP bandwidth requirements. Release of Radio Resource and Terrestrial Resource After a transaction is completed, the MSC sends a CLEAR COMMAND to instruct the BSS to release the radio resources. http://dualsoftswitch.com/forum/erlang/thread.htx?thread=4895

Handover Resource Allocation The Handover Resource Allocation procedure enables the MSC to request resources from a BSS according to the handover requirements. When the BSS receives a radio interface PAGING RESPONSE message, a SCCP connection is set up towards the MSC. All communication is lost with the MS, and the transaction is abandoned. Page33Copyright © 2008 Huawei Technologies Co., Ltd.

Paging PAGING messages for all MSs are sent through the BSSMAP as a connectionless message. All rights reserved. On receipt of CLEAR COMPLETE, the MSC releases any assigned terrestrial resources at the local end. The HANDOVER REQUIRED message is retransmitted with a periodicity until any of the following cases takes place: A HANDOVER COMMAND message is received from the MSC.

Its contents shall be equal to the received element. All rights reserved. The PAGING RESPONSE message is taken in a COMPLETE LAYER 3 message of BSSMAP and is carried to the MSC through the signaling connection. All rights reserved.

HANDOVER REQUEST (2) Information Element type Direction Description Cause O MSC- >BSC Classmark Information 3 O MSC- >BSC Current Channel Type 1 O MSC- >BSC Speech Version (Used) O MSC- >BSC Message Enter your message. sometimes this problem was occured due to "different vendor" e.g : inter msc between alcatel - ericsson, and routing for inter bsc inter MSC also (and different vendor). The PAGING RESPONSE message is taken in a COMPLETE LAYER 3 message of BSSMAP and is carried to the MSC through the signaling connection.

Page60Copyright © 2008 Huawei Technologies Co., Ltd. http://www.erlang.com/forum/erlang/thread.htx?thread=8340 This message is used by the MSC to release affected calls and erase all affected references, and to put all circuits to the idle state. During handover execution, the dedicated radio resources will not be released and the terrestrial resources will not be marked as idle until a CLEAR COMMAND message is received from the MSC All rights reserved. 2.

Bits 7-1 indicate the permitted speech version identifier; 765 4321 000 0001GSM speech full rate version 1 001 0001GSM speech full rate version 2 010 0001GSM speech full rate version 3 get redirected here Flat monthly rate. Bill My Calls >> Protocol error between MSC and BSC Erlang for Excel An Add-In for Microsoft Excel that lets you use Erlang B and C functions in your own Excel Queuing Indication The purpose of the Queuing Indication procedure is to inform the MSC of a delay in the allocation of the necessary dedicated radio resources by the BSS.

All rights reserved. HANDOVER REQUEST ACK Information Element type Direction Description Message Type M BSC- >MSC L3 Information M BSC- >MSC Carrying a radio interface HANDOVER COMMAND message Chosen Channel O BSC- >MSC channel The flow control on the A interface is implemented by controlling traffic at the traffic source. 15-level flow control is provided. navigate to this website All rights reserved.

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  1. Handover Required Due to the following reasons, the BSS will send a HANDOVER REQUIRED message to the MSC to implement handover for a MS with the assigned dedicated resource: The BSS
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Release of Radio Resource and Terrestrial Resource After a transaction is completed, the MSC sends a CLEAR COMMAND to instruct the BSS to release the radio resources. The MSC may take these pieces of information into account for the external handover decision. Page26Copyright © 2008 Huawei Technologies Co., Ltd. Page7Copyright © 2008 Huawei Technologies Co., Ltd.

Cipher Mode Control BSSMS RR: CIPHER MODE COMPLETE MSC RR: CIPHER MODE COMMAND BSSMAP: CIPHER MODE COMPLETE BSSMAP: CIPHER MODE COMMAND BSSMAP: CIPHER MODE REJECT 33. VoIP Calculator Our entry level VoIP calculator allowing you to easily calculate your Voice over IP bandwidth requirements. Blocking and Unblocking The Assignment procedure depends upon the MSC choosing the terrestrial resource to be used. http://spamdestructor.com/protocol-error/protocol-error-cdb.php Chosen Encryption Algorithm Included at least when the encryption algorithm has been selected by the BSS.

Ericson claims that 2nd assignment request is according to 3GPP and MSC can decide for a new TCH, I went through 3GPP Doc and honestly i couldnt understand it fully. Group Call Reference This element is included if the MS is in a voice broadcast or voice group call. Page14Copyright © 2008 Huawei Technologies Co., Ltd. Email Optional - If you enter your email address in this box, then you will automatically be notified if anyone replies to your message.

The MSC may take these pieces of information into account for the external handover decision. During some effective time segment, the traffic of the close cell shall be taken into account for handover between adjacent BSSs. Page46Copyright © 2008 Huawei Technologies Co., Ltd. Speech Version (Used)This information element should always be included when the channel mode is speech, and only in this case.

Encryption Information IE Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 0 or 1 0 or 1 0 or 1 0 or 1 Page35Copyright © 2008 Huawei Technologies Co., Ltd. All rights reserved.