C4 Telecom, S.L. 
| General office |
| VoIP Provider: | C4 Telecom, S.L. |
| Address: | C/ Francisco Suarez, 9 |
| City: | Madrid |
| Country: | Spain |
| State: | Madrid |
| Zip code: | 28036 |
| Phone number: | +34 91789 7150 |
| Fax number: | +34 91761 6111 |
| Email: | Send Message |
| VoIP Provider URL: | http://www.c4telecom.com |
| Contact Persons | |
| Name: | Guillermo Monguio |
| Position: | WholeSales Manager |
| Phone number: | +34 91 789 7150 |
| Mobile number: | |
| Fax number: | |
| Email: | Send Message |
| Providers Details | |
| VoIP Categories: | Hosted VoIP billing service provider, International VoIP Wholesale Provider, Internet Telephony Service Provider, Internet VoIP and Video Conferencing Service Provider, SIP Billing, Voip consulting, Voip Termination ISP |
| VoIP Services: | Billing Software, Call Relay VoIP Solutions, Call Routing VoIP Solutions, E1 Bulk Wholeseller, Gatekeepering, H.323 Softswitch & CPE, H.323 VoIP Gateway, H.323 Wireless/ GSM VoIP Solutions, PC to Phone, Phone To PC, Phone To Phone, SIP Softswitch & CPE, SIP VoIP Gateway, Termination, Voice and Video Conferencing |
| VoIP Equipments: | Cisco Systems, Mera |
| VoIP Billing Softwares: | Billing system of own development |
| Description: | |
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