FXS port is used to connect directly to phones, fax machines, and key systems. Generates battery polarity reversal and caller ID. DID port is used to provide off-premises DID connection from central office. Serves only incoming calls from the PSTN. Does not support caller ID in DID mode.
Products specifications
Attribute name | Attribute value |
---|
Number of voice channels supported (max) | 2 |
Connector type | N |
Quality of Service (QoS) support | Y |
Operating temperature (T-T) | 10 - 35 °C |
Operating relative humidity (H-H) | 10 - 80 % |
Supported network protocols | H.323 V1/V2/V3/V4, MGCP 0.1/1.0, SIP; T.37, T.38; T1, E1; |