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,
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
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
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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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