Description:

chan_dongle is an Asterisk channel driver for Huawei UMTS/3G USB
modems (dongles). At this moment, the supported features are:

- Voice calls, dialling by modem name, group, round robin, provider
name, IMEI or IMSI.
- Call waiting
- Call holding
- Conference (multiparty) call
- Send SMS from CLI, asterisk manager and dialplan
- Receive SMS (latin charset and multiline included)
- Send USSD
- Receive USSD (latin charset and multiline included)
- Send DTMF (excluding A,B,C,D letters not supported by Huawei)
- Receive DTMF