You are here: CSP API Reference > 1 EXS & SwitchKit API Messages > B Channel Query 0x00CA

B Channel Query 0x00CA

SwitchKit Name

BChannelQuery

Type

EXS API and SwitchKit API message

Description

B Channel Query 0x00CA

Use this message to query the configuration and current channel state information on an ISDN PRI B Channel, DASS2, or DPNSS B Channel.

The information in the response varies for ISDN and DASS2/DPNSS.

Related API Messages

B Channel Configure 0x00C8 (SwitchKit Name: BChannelConfig)

Sent by

Host

SwitchKit Code

C Structure

typedef struct {

unsigned short Span;

UBYTE Channel;

} XL_BChannelQuery;

C Structure Response

typedef struct {

unsigned short Status;

unsigned short Span;

UBYTE Channel;

UBYTE DChannelID;

UBYTE Facility;

UBYTE BChannel;

UBYTE CurrentState;

UBYTE PriDEnable;

UBYTE PriBEnable;

UBYTE ExternalEnable;

UBYTE HostEnable;

UBYTE ControllingDChannelFlag;

UBYTE NetworkType;

UBYTE CallType;

UBYTE CallingType;

UBYTE CallingNumberPlanID;

UBYTE CallingPresentationInd;

UBYTE CallingScreeningInd;

UBYTE CalledType;

UBYTE CalledNumberPlanID;

UBYTE PCMEncodingFormat;

UBYTE DistantEndReleaseMode;

UBYTE AnswerSupervisionMode;

UBYTE ISDNEventEnable;

UBYTE LocalEndReleaseMode;

UBYTE NetworkBlocked;

} XL_BChannelQueryAck;

C++ Class

class XLC_BChannelQuery : public XLC_OneChannelOutbound {

public:

unsigned short getSpan() const;

void setSpan(unsigned short x);

UBYTE getChannel() const;

void setChannel(UBYTE x);

};

C++ Class Response

class XLC_BChannelQueryAck : public XLC_AcknowledgeMessage {

public:

unsigned short getStatus() const;

void setStatus(unsigned short x);

unsigned short getSpan() const;

void setSpan(unsigned short x);

UBYTE getChannel() const;

void setChannel(UBYTE x);

UBYTE getDChannelID() const;

void setDChannelID(UBYTE x);

UBYTE getFacility() const;

void setFacility(UBYTE x);

UBYTE getBChannel() const;

void setBChannel(UBYTE x);

UBYTE getCurrentState() const

void setCurrentState(UBYTE x);

UBYTE getPriDEnable() const

void setPriDEnable(UBYTE x);

UBYTE getPriBEnable() const;

void setPriBEnable(UBYTE x);

UBYTE getExternalEnable() const;

void setExternalEnable(UBYTE x);

UBYTE getHostEnable() const;

void setHostEnable(UBYTE x);

UBYTE getControllingDChannelFlag() const;

void setControllingDChannelFlag(UBYTE x);

UBYTE getNetworkType() const;

void setNetworkType(UBYTE x);

UBYTE getCallType() const;

void setCallType(UBYTE x);

UBYTE getCallingType() const;

void setCallingType(UBYTE x);

UBYTE getCallingNumberPlanID() const;

void setCallingNumberPlanID(UBYTE x);

UBYTE getCallingPresentationInd() const;

void setCallingPresentationInd(UBYTE x);

UBYTE getCallingScreeningInd() const;

void setCallingScreeningInd(UBYTE x);

UBYTE getCalledType() const;

void setCalledType(UBYTE x);

UBYTE getCalledNumberPlanID() const;

void setCalledNumberPlanID(UBYTE x);

UBYTE getPCMEncodingFormat() const;

void setPCMEncodingFormat(UBYTE x);

UBYTE getDistantEndReleaseMode() const;

void setDistantEndReleaseMode(UBYTE x);

UBYTE getAnswerSupervisionMode() const;

void setAnswerSupervisionMode(UBYTE x);

UBYTE getISDNEventEnable() const;

void setISDNEventEnable(UBYTE x);

UBYTE getLocalEndReleaseMode() const;

void setLocalEndReleaseMode(UBYTE x);

UBYTE getNetworkBlocked() const;

void setNetworkBlocked(UBYTE x);

};

 

Overview of message

The following two tables provides an overview of this message. The tables following them, provides the detail for each byte.

Overview of ISDN PRI B Channels

MESSAGE (White)

RESPONSE (Gray)

Byte

Field Description

Byte

Field Description

0

Frame (0xFE)

0

Frame (0xFE)

1, 2

Length (0xNNNN)

1, 2

Length (0xNNNN)

3, 4

Message Type (0x00CA)

3, 4

Message Type (0x00CA)

5

Reserved (0x00)

5

Reserved (0x00)

6

Sequence Number

6

Same Sequence Number

7

Logical Node ID

7

Logical Node ID

:

AIB

Address Method

0x00 - Individual AEs

8, 9

Status MSB, LSB

Number of AEs to follow

0x0D Channel

:

Checksum

:

AIB

Address Method

0x00 - Individual AEs

Number of AEs to follow

0x0D Channel

:

D Channel ID (Reserved)

 

(Response continued below.)

:

Facility Number

 

:

B Channel ID (Reserved)

:

Current State (Reserved)

:

PRI D Enable (Reserved)

:

PRI B Enable (Reserved)

:

External Enable (Reserved)

:

Host Enable (Reserved)

:

Controlling D Channel Flag

:

Network Type

:

Outgoing Information Transfer Capability

:

Calling Number Type

:

Calling Number Plan ID

:

Calling Presentation Indicator

:

Calling Screen Indicator

:

Called Number Type

:

Called Number Plan ID

:

PCM Encoding Format

:

Distant End Release Mode

:

Answer Supervision Mode

:

ISDN Event Enable (Reserved)

:

Local End Release Mode

:

Network Blocked (Reserved)

:

Checksum

Overview of DASS2/DPNSS B Channels

MESSAGE

RESPONSE

Byte

Field Description

Byte

Field Description

0

Frame (0xFE)

0

Frame (0xFE)

1

Length, MSB

1

Length, MSB

2

Length, LSB (N)

2

Length, LSB (N)

3

Message Type, MSB (0x00)

3

Message Type, MSB (0x00)

4

Message Type, LSB (0xCA)

4

Message Type, LSB (0xCA)

5

Reserved (0x00)

5

Reserved (0x00)

6

Sequence Number

6

Same Sequence Number

7

Logical Node ID

7

Logical Node ID

:

AIB

Address Method

0x00 - Individual AEs

8,9

Status MSB, LSB

Number of AEs to follow

0x0D Channel

:

Checksum

:

AIB

Address Method

0x00 - Individual AEs

 

Number of AEs to follow

 

 

 

0x0D Channel

 

(Response continued below.)

:

D Channel ID (Reserved)

:

Reserved

:

B Channel ID (Reserved)

:

L3P State

:

L3 State

:

L2 State

:

Reserved

:

Reserved

:

Controlling D Channel Flag

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

PCM Encoding Format

:

Distant End Release Mode

:

Answer Supervision Mode

:

Reserved

:

Local End Release Mode

:

Reserved

:

Checksum

 

 

EXS API Hex Format for ISDN PRI B Channels - Detail

NOTE: The reserved fields are used by Dialogic Technical Support for diagnostic purposes only. Please ignore these fields during normal operation.

MESSAGE (White)

RESPONSE (Gray)

Byte

Field Description

Byte

Field Description

0

Frame (0xFE)

0

Frame (0xFE)

1, 2

Length (0xNNNN)

1, 2

Length (0xNNNN)

3, 4

Message Type (0x00CA)

3, 4

Message Type (0x00CA)

5

Reserved (0x00)

5

Reserved (0x00)

6

Sequence Number

6

Same Sequence Number

7

Logical Node ID

7

Logical Node ID

8

AIB (Individual AEs)
0x0D Channel

8, 9

Status MSB, LSB

:

Checksum

10

AIB (Individual AEs)
0x0D Channel

:

D Channel ID (Reserved)

 

(Response continued below.)

:

Facility Number

The network-relative facility (or span) number for the associated D channel.

 

0x00 : For both FAS and NFAS, this value represents the facility in which the controlling
D channel resides

 

0x01–0x09 : For NFAS, these values represent the other facilities that the D channel controls
In Facility-Associated Signaling (FAS), one D channel controls the B channels

within the same span. In Non-Facility Associated Signaling (NFAS), one D
channel controls the B channels on up to 10 spans. These spans are designated
as facilities 0–9.

:

B Channel ID (Reserved)

:

Current State (Reserved)

:

PRI D Enable (Reserved)

The system derives the value from the state as indicated in the Current State field:

0x00 Not Enabled

0x01 Enabled

:

PRI B Enable (Reserved)

The system derives the value from the state as indicated in the Current State field:

0x00 Not Enabled

0x01 Enabled

:

External Enable (Reserved)

The system derives the value from the state as indicated in the Current State field:

0x00 Not Enabled

0x01 Enabled

:

Host Enable (Reserved)

The system derives the value from the state as indicated in the Current State field:

0x00 Not Enabled

0x01 Enabled

:

Controlling D Channel Flag

0x00 Channel is not a D channel

0x01 Channel is a D channel

:

Network Type

0x01 Do Not Include Network-Specific Facilities (NSF) IE

0x02 AT&T Software Defined Network

0x03 AT&T Megacom 800 Service

0x04 AT&T Megacom

0x05 AT&T Accunet

0x06 AT&T Long Distance Service

0x07 AT&T International 800

0x08 AT&T Multiquest

0x09 Northern Telecom Private Net

0x0A Northern Telecom Inroads

0x0B Northern Telecom OutWats

0x0C Northern Telecom Foreign Exchange

0x0D Northern Telecom Tie Trunk

0x0E Northern Telecom TRO Call

:

Outgoing Information Transfer Capability

0x01 Voice

0x02 Modem

0x03 56 Kbps

0x04 64 Kbps

0x05 64 Kbps Restricted

:

Calling Number Type

0x01 Unknown

0x02 International number

0x03 National number

0x04 Subscriber number

0x05 Abbreviated number

:

Calling Number Plan ID

0x01 Unknown

0x02 ISDN Numbering Plan/Recommendation E.164/E.163

0x03 Private numbering plan

0x04 Telephony numbering plan

:

Calling Presentation Indicator

0x01 Presentation is allowed

0x02 Presentation is restricted

0x03 Number not available due to interworking

:

Calling Screen Indicator

0x01 User provided, not screened

0x02 User provided, verified and passed

0x03 User provided, verified and failed

0x04 Network provided

:

Called Number Type

0x01 Unknown type of number

0x02 International number

0x03 National number

0x04 Subscriber number

0x05 Abbreviated number

:

Called Number Plan ID

0x01 Unknown numbering plan

0x02 ISDN numbering plan/Recommendation E.164/E.163

0x03 Private numbering plan

0x04 Telephony numbering plan

:

PCM Encoding Format

0x01 µ-law Encoding

0x02 A-law Encoding

:

Distant End Release Mode

0x01 Park

0x02 Release

:

Answer Supervision Mode

0x00 Propagate Answer to the Distant End

0x01 Notify Host of Answer

0x02 Propagate Answer to the Distant End and Notify Host of Answer

0x03 No Answer Supervision – no propagation of answer or notification

:

ISDN Event Enable (Reserved)

You can send this data to the host using the PPL messages.

:

Local End Release Mode

0x01 Park

0x02 Release

:

Network Blocked (Reserved)

:

Checksum

EXS API Hex Format for DASS2/DPNSS B Channels - Detail

NOTE: The reserved fields are used by Dialogic Technical Support for diagnostic purposes only. Please ignore these fields during normal operation.

MESSAGE

RESPONSE

Byte

Field Description

Byte

Field Description

0

Frame (0xFE)

0

Frame (0xFE)

1

Length, MSB

1

Length, MSB

2

Length, LSB (N)

2

Length, LSB (N)

3

Message Type, MSB (0x00)

3

Message Type, MSB (0x00)

4

Message Type, LSB (0xCA)

4

Message Type, LSB (0xCA)

5

Reserved (0x00)

5

Reserved (0x00)

6

Sequence Number

6

Same Sequence Number

7

Logical Node ID

7

Logical Node ID

8

AIB (Individual AEs)
0x0D Channel

8, 9

Status MSB, LSB

:

Checksum

10

AIB (Individual AEs)
0x0D Channel

 

(Response continued below.)

:

D Channel ID (Reserved)

:

Reserved

:

B Channel ID (Reserved)

:

L3P State - Call Control PPL State (0x0D)

Indicates the state of the DASS2/DPNSS Call Control PPL component.

:

L3 State

DASS2 States

0x01 Connected

0x02 Dial In (receiving overlap call)

0x03 Dial Out (sending overlap call)

0x04 Idle

0x05 Incoming (received CS)

0x06 Offered (received ICI[C])

0x07 Offered Incomplete (received ICI[I])

0x08 Origination (sent ISRM)

0x09 Recovery (Received unexpected message in Idle State)

0x0A Releasing (Waiting for CIM)

0x0B Routing In

0x0C Routing Out

 

DPNSS States

0x01 Channel Idle

0x02 Spurious Message Received

0x03 Incoming Service Request Incomplete

0x04 Incoming Service Request Complete

0x05 Channel Release Guard

0x06 Channel Release Guard Tell Host

0x07 Setup Complete

0x08 Outgoing Service Request Complete

0x09 Outgoing Service Request Incomplete

0x0A Host Release Wait

:

L2 State

0x01 Establishing Wait (sent SABMR, waiting for UA)

0x02 Idle (Down)

0x03 Ready (Up)

0x04 Wait Response (Up, waiting for UI[R])

:

Reserved

:

Reserved

:

Controlling D Channel Flag

0x00 Channel is not a D channel

0x01 Channel is a D channel

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

Reserved

:

PCM Encoding Format

0x01 µ-law Encoding

0x02 A-law Encoding

:

Distant End Release Mode

0x01 Park

0x02 Release

:

Answer Supervision Mode

0x00 Propagate Answer to the Distant End

0x01 Notify Host of Answer

0x02 Propagate Answer to the Distant End and Notify Host of Answer

0x03 No Answer Supervision – no propagation of answer or notification

:

Reserved

:

Local End Release Mode

0x01 Park

0x02 Release

:

Reserved

:

Checksum