Imass Telecom United Kingdom

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General office

Imass Telecom
75 Blackfriars Road
London
,SE1 8HA
United Kingdom

Phone: +44 207 401 4220

International VoIP Wholesale Provider
Internet Telephony Service Provider
Hosted VoIP billing service provider
Voip Termination ISP
VoIP Billing Software Provider
Voip consulting
SIP Billing

Phone To Phone
Phone To PC
Fax To Fax
Web Call
Outsourced Billing
PC to Phone
Web To Phone
Voice and Video Conferencing
Termination
Billing Software
Call Relay VoIP Solutions
H.323 VoIP Gateway
E1 Bulk Wholeseller
Partnering for Origination and Termination
H.323 Softswitch & CPE
SIP Softswitch & CPE
SIP VoIP Gateway

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Java Based own system

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Automatic Call-back

In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.

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