Transmission medium requirement

Associated variants: BICC, ETSI V2, ETSI V3, ITU Blue, ITU White, ITU 97, Q.767

Contains information sent in the forward direction to indicate the type of transmission medium required for the connection.

typedef struct _txMedReq /* Transmission Medium Requirement */
{
    ElmtHdr eh;          /* element header                  */
    TknU8   trMedReq;    /* transmission medium requirement */
} SiTxMedReq;

The trMedReq field is encoded to one of the following values:

0x00

TMR_SPEECH

Speech.

0x02

64 kbit/s unrestricted

64 kbit/s unrestricted.

0x03

TMR_31KHZ

3.1 kHz audio.

0x05

TMR_ALTSPEECH

Reserved for alternate speech (service 2)/64 kbit/s unrestricted (service 1).

0x05

TMR_ALT64KBITS

Reserved for alternate 64 kbit/s unrestricted (service 1) speech (service 2).

0x08

TMR_2X64KBITS

TMR_2X64KBITS   2 x 64 kbit/s unrestricted.

0x09

TMR_1536KBITS

1536 kbit/s unrestricted.

0x0a

TMR_1920KBITS

1920 kbit/s unrestricted.


Tokens for the BICC, and ETSI variants

Token

BICC

ETSI V2

ETSI V3

trMedReq

*

*

*


Tokens for the ITU and Q.767 variants

Token

ITU Blue

ITU White

ITU 97

Q.767

trMedReq

*

*

*

*