联网
| 支持的语音信道 数(最多) |
2 |
| 支持服务质量(QoS) |
Y |
协议
| 支持网络协议 |
H.323 V1/V2/V3/V4, MGCP 0.1/1.0, SIP; T.37, T.38; T1, E1; |
2 Port Voice Interface Card, Spare
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.