VOIP Service Providers Residential
Media Market Co.
SuperLink Communications Co. Ltd
SuperLink Communications Co. Ltd
Next Telecom palvoip.net
*Next Telecom palvoip.net
Jinan Telecommunication
Jinan Telecommunication
Madar Communication CO
Fusion Co.
Fusion Co.
“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
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Shomon Ahmed
- Public
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