4 Carriers Sp. z o.o. Poland

Termination, Call Routing VoIP Solutions, SIP, H.323 Softswitch & CPE, H.323 VoIP Gateway, H.323 Wireless/ GSM VoIP Solutions,

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General office

4 Carriers Sp. z o.o.
Aleje Jerozolimskie 42/67
Warsaw
Mazowieckie ,00-024
Poland

Phone: +48 397 77 77
Phone: +48223977777

Contact Person

Piotr Slowinski
Phone: +48223977777
Phone: +48608303030

Wholesale VoIP Carrier

Termination

Cisco Systems

another

NetTEL

Crowley Data Poland Sp. z o.o.

Providers in database: 6433

Detailed description of SIP protocol

SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.

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*astTECS

*astTECS is a leading telecommunication products and solutions company offering comprehensive and integrated solution in the area of IP Telephony and Asterisk based Open Source Enterprise Telecom Solutions. With a dedicated team to provide quality consulting and services, *astTECS aims to fulfil the telecommunication needs of the industry with the Asterisk based cost-effective telephony solutions. The company provides unique value to its customers through sales, consultancy for telecommunication infrastructure and access equipments, delivery, installation and maintenance of telecommunication products and flexible purchase models to meet buyer’s requirements. For more info, please visit: www.asttecs.com