| Part Number | Description |
| YV-4P-T/R | 4ch Tel |
| YV-4P1E-T/R | 4ch Tel, 1ch 10/100M Ethernet |
| YV-4P2E-T/R | 4ch Tel, 2ch 10/100M Ethernet |
| YV-4P2E-T/R-VLAN | 4ch Tel, 2ch 10/100M Ethernet(VLAN) |
| YV-4P4E-T/R-VLAN | 4ch Tel, 4ch 10/100M Ethernet(VLAN) |
| YV-4P1GE-T/R | 4ch Tel, 1ch 10/100/1000M Ethernet |
| YV-4P2GE-T/R | 4ch Tel, 2ch 10/100/1000M Ethernet |
* Voice port supports FXO and FXS port, magnet telephone Interface, FXO port docking with program-controlled switch board, FXS port connected to the user's telephone;
* 1~128channel Voice access, Voice FXO / FXS interface, support for caller ID/reverse polarity billing/fax function;
* Support various sites mutual number allocation function;
* Ethernet interface supports half/full duplex auto- adaptable, support VLAN;
* Ethernet interface can support AUTO-MDIX (crossed line and straightly connected line self-adaptable);
* Telephone interface with lightning protection, lightning reached IEC61000-4-5 Short circuit current wave 8/20μs, the peak output voltage 6KV open standards;
* The transmission distance is up to 2-120km without interruption;
