BusinessPhone Communication Platform 5.1
Commands > Commands 1000...1999

## 1612
Transmission group

The command is used to state in which transmission group of the transmission matrix the external line should be included. The transmission matrix is defined in command 2720 The transmission matrix and is used for adaptation of the relative levels depending on the type of interface the external line is connected to.

0 = Initial value, used for all types of ELUs, BTU-A on short trunk lines BTU-D

1 = BTU-A on medium trunk lines

2 = BTU-A on long trunk lines

3 = 2-wire tie lines (BTU-C, BTU-E)

4 = 4-wire tie lines (BTU-E)

5-6 = Reserved for special market requirements

7 = No transmission adaptation

Minimum required authority level from telephone: No

Accessible via BMS: Yes

Revision: PD1 © Ericsson Enterprise 2003