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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
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Crowley Data Poland Sp. z o.o.
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Busy Lamp Field (BLF)

Busy Lamp Field (BLF) Allows users tracking the condition of the other telephone or the subscriber, for example, there will appear a signal on the screen of the telephone device informing that the subscriber is on the line and is temporarily unavailable.

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United States vdi.net

VoIP Termination/Origination Solutions for small and large business, Local and Overseas based. Sip Trunks, DIDs, Toll Free Numbers,

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