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

 

 

 

 

 

 

 

 

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0

 

 

 

 

 

 

 

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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

 

 

 

 

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0

 

 

 

 

 

 

 

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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

 

 

 

 

 

 

 

 

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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

 

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

 

H

G

F

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

 

 

 

 

 

 

 

 

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