You are here: CSP API Reference > 1 EXS & SwitchKit API Messages > Cross Connect Channel 0x001A
SwitchKit Name
Type
EXS API and SwitchKit API message
Description
This message makes a connection between two channels’ data paths. No signaling information can be used to detect either channel releasing. The host must tear the connection down using the Cross Disconnect Channel message.
If you cross-connect T1 and E1 channels, the result is automatic PCM conversion (A-law/µ-law). By default, channels on T1 spans are µ-law and channels on E1 spans are A-law. To disable conversion, as would be required if you connect through an ISDN D channel or SS7 link, you must configure both channels with the same format using the PCM Encoding Format Configure message.
This message is supported by the VDAC-ONE card but not the IP Network Interface Series 2 card.
NOTE: When cross-connecting channels across nodes in an Excel platform system, a separate message must be sent to each channel in the connection.
For example, you would send one message to Node 1: Cross Connect Channel A, B. You would send another message to Node 2: Cross Connect Channel B, A.
You can use optional fields for Encoding Format and Pad Value, which are described below the message table. The Encoding Format and Pad Value fields are required for cross-connections involving separate nodes in a multi-node system only.
Sent by
SwitchKit Code
Configuration
CrossConnectChannel (
Node = integer,
SpanA = integer,
ChannelA = integer,
SpanB = integer,
ChannelB = integer,
AEncoding = integer,
APad = integer,
BEncoding = integer,
BPad = integer);
C Structure
typedef struct {
unsigned short SpanA;
UBYTE ChannelA;
unsigned short SpanB;
UBYTE ChannelB;
UBYTE AEncoding;
UBYTE APad;
UBYTE BEncoding;
UBYTE BPad;
} XL_CrossConnectChannel;
C++ Class
class XLC_CrossConnectChannel : public XLC_OutboundMessage {
public:
unsigned short getSpanA() const;
void setSpanA(unsigned short x);
UBYTE getChannelA() const;
void setChannelA(UBYTE x);
unsigned short getSpanB() const;
void setSpanB(unsigned short x);
UBYTE getChannelB() const;
void setChannelB(UBYTE x);
UBYTE getAEncoding() const;
void setAEncoding(UBYTE x);
UBYTE getAPad() const;
void setAPad(UBYTE x);
UBYTE getBEncoding() const;
void setBEncoding(UBYTE x);
UBYTE getBPad() const;
void setBPad(UBYTE x);
EXS API Hex Format
MESSAGE (White) |
RESPONSE (Gray) |
||
Byte |
Field Description |
Byte |
Field Description |
0 |
Frame (0xFE) |
0 |
Frame (0xFE) |
1, 2 |
Length (0x0015) |
1, 2 |
Length (0x0007) |
3, 4 |
Message Type (0x001A) |
3, 4 |
Message Type (0x001A) |
5 |
Reserved (0x00) |
5 |
Reserved (0x00) |
6 |
Sequence Number |
6 |
Same Sequence Number |
7 |
Logical Node ID |
7 |
Logical Node ID |
: |
Address Method 0x00 - Individual AEs |
8, 9 |
|
Number of AEs 0x02 |
|||
AEs |
|||
: |
Channel A Encoding Format 0x01 µ-law 0x02 A-law |
10 |
Checksum |
: |
Channel A Pad Value NOTE: This is a blind connection and should only be done with spans and channels The dB gain/loss adjustment of the signal being transmitted to the appropriate channel: 0x00 +3 dB Gain/Loss 0x01 0 dB 0x02 2 dB 0x03 3 dB 0x04 4 dB 0x05 6 dB 0x06 9 dB |
||
: |
Channel B Encoding Format 0x01 µ-law 0x02 A-law |
||
: |
Channel B Pad Value NOTE: This is a blind connection and should only be done with spans and channels The dB gain/loss adjustment of the signal being transmitted to the appropriate channel: 0x00 +3 dB Gain/Loss 0x01 0 dB 0x02 2 dB 0x03 3 dB 0x04 4 dB 0x05 6 dB 0x06 9 dB |
||
: |
Checksum |