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.
SRR Technologies is the first of it''s kind SIP VoIP consolidated solutions system and services.
Pricing Starting at:
$ 99.99 a port
$ 1.99 a phone number
$ 0.99 per inbound voice circuit from the carrier