User Service Information Table

User Service Information (Octet 1)

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
User transfer capability
Speech				0	0	0	0	0
Unrestricted digital information				0	1	0	0	0
Restricted digital information				0	1	0	0	1
3.1 kHz audio				1	0	0	0	0
7 kHz audio				1	0	0	0	1
Coding Standard
ITU standardized coding		0	0
National standard		1	0
Extension Bit
Octet continues through the next octet	0
Last Octet	1

User Service Information (Octet 2)

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
Information Transfer Rate
Code for packet mode calls				0	0	0	0	0
64 Kbps				1	0	0	0	0
384 Kbps				1	0	0	1	1
1472 kbps (national ansi only)				1	0	1	0	0
1536 Kbps				1	0	1	0	1
1920 Kbps				1	0	1	1	1
Multirate (64 Kbps based)				1	1	0	0	0
Transfer Mode
Circuit Mode		0	0
Packet Mode		1	0
Extension bit
Octet continues through the next octet	0
Last Octet	1

User Service Information (Octet 2a)

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
Establishment
Demand							0	0
Configuration
Point to Point					0	0
Structure
Default		0	0	0
8kHz integrity		0	0	1
Service data unit integrity		1	0	0
Unstructured		1	1	1
Extension Bit
Octet continues through the next octet	0
Last Octet	1

User Service Information (Octet 2b)

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
Information Transfer Rate
Code for packet mode calls				0	0	0	0	0
64 Kbps				1	0	0	0	0
384 Kbps				1	0	0	1	1
1472 Kbps				1	0	1	0	0
1536 Kbps				1	0	1	0	1
1920 Kbps				1	0	1	1	1
Multi-rate (64 Kbps based)				1	1	0	0	0
Symmetry
Bi-directional symmetry		0	0
Extension bit
Octet continues through the next octet	0
Last Octet	1

User Service Information (Octet 2.1) present if octet 2 indicates multi-rate 64 kbps

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
Rate Multiplier
Reserved (0)		0	0	0	0	0	0	0
1 to 30		0	0	0	0	0	0	1
to
31 to 127		0	0	1	1	1	1	0
31 to 127		0	0	1	1	1	1	1
to
		1	1	1	1	1	1	1
Extension Bit
Octet continues through the next octet	0
Last Octet	1

User Service Information (Octet 3)

	H	G	F	E	D	C	B	A

	E	D	C	B	A
User Information layer 1 protocol
ITU standardized rate adaption V.110/X.30	0	0	0	0	1
Recommendation G.711 u-law speech	0	0	0	1	0
Recommendation G.722 AND g.725 7 kHz audio	0	0	1	0	1

User Service Information (Octet 5)

	H	G	F	E	D	C	B	A

	H	G	F	E	D	C	B	A
User Information (layer 3 protocol)
ANSI T1.607				0	0	0	1	0
Recommendation x.25 packet layer				0	0	1	1	0
Layer 3 identifier		1	1
Extension Bit
Octet continues through the next octet	0
Last Octet	1

Dialogic Integrated Media Gateways