CTC Express Bangladesh
General office
CTC Express
chittagong, Banglaesh
chittagong
CTG ,4000
Bangladesh
Phone: +8801766605560
Site: http://www.ctcexpress.com/vsr
Contact Person
Ejajul Islam / CEO
Phone: +8801766605560
CTC Express
chittagong, Banglaesh
chittagong
CTG ,4000
Bangladesh
Phone: +8801766605560
Site: http://www.ctcexpress.com/vsr
Contact Person
Ejajul Islam / CEO
Phone: +8801766605560
- A-Z Termination
- International VoIP Wholesale Provider
- Marketing Services
- Wholesale VoIP Carrier
- PC to Phone
- SIP Softswitch & CPE
- VoipSwitch
- Linksys
- VSR Systems
- a2billing
- Voip Switch
- Wholesale VoIP services
Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.
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