Echo control indicators

Associated variants: BICC, ETSI V2, ETSI V3, ITU White, ITU 97

Indicates whether or not a half echo control device is included in the connection.

typedef struct _echoControl  /* echo control indicators               */
{
    ElmtHdr eh;              /* element header                        */
    TknU8   outEchoRsp;      /* outgoing echo control device response */
    TknU8   incEchoRsp;      /* incoming echo control device response */
    TknU8   outEchoReq;      /* outgoing echo control device request  */
    TknU8   incEchoReq;      /* incoming echo control device request  */
} SiEchoCtl;

The fields in the SiEchoCtl structure are encoded as follows:

Field

Value

outEchoRsp

Outgoing echo control device response. Defined values:

0x00 = ECHCDEV_NOINFOINCL   No information

0x01 = ECHCDEV_NOTINCL   Device not included

0x02 = ECHCDEV_INCL   Device included

incEchoRsp

Incoming echo control device response. Defined values:

0x00 = ECHCDEV_NOINFOINCL   No information

0x01 = ECHCDEV_NOTINCL   Device not included

0x02 = ECHCDEV_INCL   Device included

outEchoReq

Outgoing echo control device request. Defined values:

0x00 = ECHCDEV_NOINFOINCL   No information

0x01 = ECHCDEV_ACTREQ   Device activation request

0x02 = ECHCDEV_DEACTREQ   Device deactivation request

incEchoReq

Incoming echo control device request. Defined values:

0x00 = ECHCDEV_NOINFOINCL   No information

0x01 = ECHCDEV_ACTREQ   Device activation request

0x02 = ECHCDEV_DEACTREQ   Device deactivation request


Tokens

Token

BICC

ETSI V2

ETSI V3

ITU White

ITU 97

outEchoRsp

*

*

*

*

*

incEchoRsp

*

*

*

*

*

outEchoReq

*

*

*

*

*

incEchoReq

*

*

*

*

*