sidetone
| reference equivalent
| sidetone abbr. | |
| tel. | نغمة جانبية |
| reference equivalent abbr. | |
| tel. | المكافئ المرجعي |
| |||
| نغمة جانبية | |||
|
sidetone : 4 phrases in 1 subject |
| Telephony | 4 |