SSCOP R1 ANSI 94



Contents

1General



1.1Introduction



1.2Terms



1.3Concept



1.4History




2
Compliance List



2.1SSCOP (ANSI T1.637)




3
Notes




Reference List













1   General


1.1   Introduction



Ericsson AB SSCOP ANSI version R1 is compliant with the ANSI standard Reference [1] according to the table in this document.



1.2   Terms



ANSI American National Standards Institute
ATM Asynchronous Transfer Mode
B-ISDN Broadband Integrated Services Network
CPCS Common Part Convergence Sublayer
PC Protocol Capabilities
PDU Protocol Data Unit
PICS Protocol Implementation Conformance Statement
SCCP Signalling Connection Control Part
SDL Specification and Description Language
SDU Service Data Unit
SoC Statement of Compliance
SP System Parameters 
SSCF Service Specific Coordination Function
SSCOP Service Specific Connection Oriented Protocol
SSCS Service Specific Convergence Sublayer



1.3   Concept



The terms that are used are:



C Ericsson Signalling Solution module complies with the
specified paragraph in the standard.  
N	 Ericsson Signalling Solution module does not comply
with the specified paragraph in the standard.  
P	 Ericsson Signalling Solution module complies partly
with the specified paragraph in the standard. Specify in a note what in the
module that does comply and what that does not. 
 - There is nothing to implement in the referred paragraph
(used in column “C”).


1.4   History




Table 1    Revision history




Revision




Date




Author




Comment







A




2002-08-16




Mats Jarlstedt




Approved after document inspection.







B




2007-02-19




XMRALBA




Converted to XML format







C




2007-09-27




XMREVEF




Minor changes





2   Compliance List



2.1   SSCOP (ANSI T1.637)





Table 2    Compliance List





References




C




N




P




Comments





1 




Scope, purpose and application




-



 


 


 






2 




Normative references




-



 


 


 






3 




Acronyms




-



 


 


 






4 




General




-



 


 


 






5 




Functions of the SSCOP




X



 


 


 






6 




Elements for layer to layer communication




-



 


 


 






6.1




Signals between SSCOP and SSCF, and SSCOP and SSCS layer management




X



 


 


 






6.1.1 




Signal definition




X



 


 


 






6.1.2 




Parameter definition




X



 


 


 






6.2




 State transition diagram for sequences of signals




X



 


 


 






6.3 




Signals between SSCOP and CPCS




X



 


 


 






7 




Protocol elements for peer-to-peer communications




-



 


 


 






7.1




SSCOP PDUs




X



 


 


 






7.2 




SSCOP PDU formats




X



 


 


 






7.2.1 




Coding conventions




X



 


 


 






7.2.2 




Padding (PAD) field




X



 


 


 






7.2.3 




Reserved field




X



 


 


 






7.2.4




PDU length




X



 


 


 






7.2.5 




STAT and USTAT PDU codings




X



 


 


 






7.3 




States of SSCOP protocol entity




X



 


 


 






7.4




SSCOP state variable




X



 


 


 






7.5 




SSCOP PDU parameters




X



 


 


 






7.6 




SSCOP timers




X



 


 


 






7.7




SSCOP parameters




X



 


 


 






7.8




SSCOP credit and flow control




X



 


 


 






7.8.1 




Credit and peer-to-peer flow control




X



 


 


 






7.8.2




Local flow control



 


 



X




 Note 1







8 




Specification of SSCOP




-



 


 


 






8.1 




Overview




X



 


 


 






8.1.1




Idle




X



 


 


 






8.1.2 




Establishment and release




X



 


 


 






8.1.3




Bidirectional resynchronization




X



 


 


 






8.1.4




Recovery




X



 


 


 






8.1.5 




Data transfer




X



 


 


 






8.2 




SDL diagrams




X



 


 


 






Annex A, 




Management error indications  




-



 


 


 






Annex B, 




Protocol Implementation conformance Statement (PICS) pro forma
to Recommendation Q.2110




-



 


 


 






B.1 




General




-



 


 


 






B.2 




Abbreviations and special symbol




-



 


 


 






B.3




Instructions for completing the PICS proforma




-



 


 


 






B.4 




Global statement of conformance




-



 


 


 






B.5 




SSCOP Q.2110




-



 


 


 






B.5.1 




Protocol Capabilities (PC) SSCOP




-



 


 


 






B.5.2 




SSCOP PDUs Protocol Data Units (PD)




-



 


 


 






B.5.3 




SSCOP System Parameters (SP)




-



 


 


 






Annex I, 




Concepts and terminology




-



 


 


 






Annex II, 




Examples of SSCOP operation




-



 


 


 






Annex III, 




Summary of buffer and state variable management




-



 


 


 






Annex IV, 




Default window size for SSCOP




-



 


 


 



3   Notes



Note 1 Flow control of PDUs to layer 1
is not implemented in SSCOP. The interface to the layer 1 is hardware dependent.
Transmission priority between connection and data signals is not supported.



Reference List


ANSI Standards
[1] [ANSI-1] American National Standard    for Telecommunications - B-ISDN ATM
Adaptation Layer - Service Specific Connection Oriented Protocol (SSCOP),
 ANSI T1.637 -1994
















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The contents of this document are subject to revision without notice due
to continued progress in methodology, design and manufacturing. Ericsson shall
have no liability for any error or damage of any kind resulting from the use
of this document. 











     SSCOP R1 ANSI 94