ITU Telecommunication Standardization Sector	Document  AVC-1061
Study Group 16
Q.2&3/16 Rapporteur Meeting	11 December 1996
Boulder, 17-20 December 1996

SOURCE: 	Japan
TITLE:	Consideration on Q.2931 IE used by H.310
Purpose:	proposal
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1.  Introduction
This document describes on Q.2931 Information Elements (IE) used by H.310 terminal.

2.  Modification request for AVC-1030
The contents of Fig. 1 and Fig. 2 /AVC-1030 are agreeable except for Broadband low layer information (BLLI) and Broadband repeat indicator.
The BLLI #2 (User Layer 2 = Q.922) should be removed because the relation between H310 (indicated in the BLLI #1) and Q.922 (indicated in the BLLI #2) is not comparable and the H.310 terminal includes the Q.922 capability.  (See AVC-1063)
The Broadband repeat indicator is set when more than one BLLI elements are repeated. The Broadband repeat indicator should be optional when BLLI #2 is removed.
Annex 1 shows the modified TABLE A.1/H.310. It is noted that Generic identifier transport IE is not yet specified in current Q.2931 and is referred in AVC-1062.

3.  Q.2931 IE example for AAL1 case
In AVC-1030, an example set of Q.2931 IE is provided only for AAL5 case. This document prepares the same kind of example for AAL1 case for inclusion to Annex B/H.310.
3.1  1st VC
This VC is for H.245 and its usage is same as RAST5 case.
3.2  2nd VC (AAL1 A/V)
An example set is shown in Annex 2.

References
  [1]	AVC-1030	Use of Q.2931 Signaling by an H.310 Terminal (IBM), October, 			1996
  [2]	AVC-1063	Clarification of usage of multiple B-LLI messages, (Japan), 				December, 1996
  [3]	AVC-1062	Use of H.245 resource ID, (Japan), December, 1996

END

Annex 1
TABLE A.1/ H.310
Setup message parameters for the initial VC (Phase A1)
(M) mandatory element, (O) optional element,
(NA) not applicable, (C) conditional (if appropriate for the network being used)
Information Element	Parameters	Coding	
Protocol discriminator (M)	Q.2931 user-network call/connection control messages		
Call reference (M)	A value is assigned by the originating side of the interface for a call which is unique to the originating side only within a particular signalling VC.		
Message type (M)	SETUP		
Message length (M)	as appropriate		
AAL parameters (M)	AAL type (octet 5)	AAL type 5	
	Forward max. CPCS-SDU size (octet 6.1 & 6.2)	Value sufficient for transporting H.245 messages up to 2048 octets	
	Backward max. CPCS-SDU size (octet 7.1 & 7.2)	Value sufficient for transporting H.245 messages up to 2048 octets	
	SSCS type (octet 8.1)	Frame Relay SSCS	
ATM traffic descriptor (M)	Forward peak cell rate for CLP=0+1 (octets 7.1-3)	167 cells per second which corresponds to 64 kbit/s	
	Backward peak cell rate for CLP=0+1 (octets 8.1-3)	167 cells per second which corresponds to 64 kbit/s	
Broadband bearer capability (M)	Bearer Class (octet 5)	BCOB-C	
	Traffic Type (octet 5a)	Constant Bit Rate	
	Timing Requirements (octet 5a)	End-to-End Timing Not Required	
	Susceptibility to clipping (octet 6)	susceptible to clipping	
	User plane connection configuration (octet 6)	point-to-point	
Broadband high layer information (O)	(NOTE - The H.310 related codepoints are under development)		
Broadband repeat indicator  (O)	The Broadband repeat indicator is ‘SET’ when more than one BLLI elements are repeated.		
Broadband low layer information (M)	User information layer 1 protocol (octet 5)	{all values reserved}	
	User information layer 2 protocol (octet 6)	under study	
	User information layer 3 protocol (octet 7)	H.310 Terminal	
	Terminal Type (bits 4-1 octet 7a)	ROT/SOT/RAST	
	Forward Multiplexing Capability (bits 6-4 octet 7b)	No multiplexing	
	Backward Multiplexing Capability (bits 3-1 octet 7b)	No multiplexing	
Generic identifier transport (M) (NOTE - this element is under development)			

	H.245 correlationID (See AVC-1062)	
Called party number (M)	as appropriate		
Called party subaddress (M)	as appropriate		
Calling party number (O)	as appropriate		
Calling party subaddress (O)	as appropriate		
Connection identifier (M)	VP-associated signalling (octet 5)	as appropriate	
	Preferred / exclusive (octet 5)	as appropriate	
	Virtual Path Connection Identifier (octet 6 and 7)	as appropriate	
	Virtual Channel Identifier (octet 8 and 9)	as appropriate	
End-to-end transit delay (O)	Cumulative transit delay value (octets 5.1 and 5.2)	as appropriate	
	Maximum end-to-end transit delay value (octets 6.1 and 6.2)	as appropriate	
Notification indicator (O)	as appropriate		
OAM traffic descriptor (O)	as appropriate		
QOS parameter (M)	QOS-class forward (octet 5)	These QOS parameters shall be coded in accordance with the requirements of the network.
	
	QOS-class backward (octet 6)		
	(NOTE - Particular QOS parameters are not yet defined in current Q.2931.)		
Broadband sending complete (C)	as appropriate		
Transit network selection (NA)	as appropriate		

Annex 2
TABLE A.x/ H.310
Setup message parameters for the additional VC (Phase A3)
of RAST-1/ROT-1/SOT-1
(M) mandatory element, (O) optional element
(NA) not applicable, (C) conditional (if appropriate for the network being used)
Information Element	Parameters	Coding	
Protocol discriminator (M)	Q.2931 user-network call/connection control messages		
Call reference (M)	A value is assigned by the originating side of the interface for a call which is unique to the originating side only within a particular signalling VC.		
Message type (M)	SETUP		
Message length (M)	as appropriate		
AAL parameters (M)	AAL type (octet 5)	AAL type 1	
	Subtype (octet 6.1 for AAL type 1)	Video signal transport	
	CBR rate (octet 7.1 for AAL type 1)	n x 64 kbit/s	
	Multiplier (octets 8.1 and 8.2 for AAL type 1 and n x 64 kbit/s or n x 8 kbit/s indication in octet 7.1)	as negotiated by H.245	
	Source Clock Frequency Recovery Method (octet 9.1 for AAL type 1)	as negotiated by H.245	
	Error Correction Method (octet 10.1 for AAL type 1)	as negotiated by H.245	
	Structured Data Transfer Block Size (octets 11.1 and 11.2 for AAL type 1)	if supported	
ATM traffic descriptor (M)	Forward peak cell rate for CLP=0+1 (octets 7.1-3)	Impl. Specific	
	Backward peak cell rate for CLP=0+1 (octets 8.1-3)	Impl. Specific	
	(NOTE - Forward and Backwards set according to which station sends the original setup message)	
Broadband bearer capability (M)	Bearer Class (octet 5)	BCOB-A	
	Traffic Type (octet 5a)	Constant Bit Rate	
	Timing Requirements (octet 5a)	end-to-end timing required	
	Susceptibility to clipping (octet 6)	susceptible to clipping	
	User plane connection configuration (octet 6)	point-to-point	
Broadband high layer information (O)	(NOTE - The H.310 related codepoints are under development)		
Broadband repeat indication (O)	under study		
Broadband low layer information (M)	User information layer 1 protocol (octet 5)	{all values reserved}	
	User information layer 2 protocol (octet 6)	under study	
	User information layer 3 protocol (octet 7)	H.310 Terminal	
	Terminal Type (bits 4-1 octet 7a)	RAST/ROT/SOT	
	Forward Multiplexing Capability (bits 6-4 octet 7b)	TS for RAST and SOT
Null for ROT	
	Backward Multiplexing Capability (bits 3-1 octet 7b)	TS for RAST and ROT
Null for SOT	
  Generic identifier transport (M) (NOTE - this element is under development)	H.245 correlationID (See AVC-1062)	
Called party number (M)	as appropriate		
Called party subaddress (M)	as appropriate		
Calling party number (O)	as appropriate		
Calling party subaddress (O)	as appropriate		
Connection identifier (M)	VP-associated signalling (octet 5)	as appropriate	
	Preferred / exclusive (octet 5)	as appropriate	
	Virtual Path Connection Identifier (octet 6 and 7)	as appropriate	
	Virtual Channel Identifier (octet 8 and 9)	as appropriate	
End-to-end transit delay (O)	Cumulative transit delay value (octets 5.1 and 5.2)	as appropriate	
	Maximum end-to-end transit delay value (octets 6.1 and 6.2)	as appropriate	
Notification indicator (O)	as appropriate		
OAM traffic descriptor (O)	as appropriate		
QOS parameter (M)	QOS-class forward (octet 5)
QOS-class backward (octet 6)	These QOS parameters shall be coded in accordance with the requirements of the network.	
	(NOTE - Particular QOS parameters are not yet defined in current Q.2931.)	
Broadband sending complete (C)	as appropriate		
Transit network selection (NA)	as appropriate