international carriers lists

Nemertes Research 2008 PilotHouse Awards: VOIP Providers

Best Overall VOIP Providers (all rollout sizes combined)

* ShoreTel, Inc. - Winner
* Siemens Enterprise Communications - Finalist
* 3Com Corporation - Finalist

Top-Tier VOIP Providers - Small Rollouts (<500 Endpoints)

* ShoreTel, Inc.
* Siemens Enterprise Communications
* Cisco Systems, Inc.

Top-Tier VOIP Providers - Midsize Rollouts (500-2,000 Endpoints)

* Cisco Systems, Inc
* Avaya Inc.
* Nortel

Top-Tier VOIP Providers - Large Rollouts (>2,000 Endpoints)

* Nortel
* Alcatel-Lucent
* Cisco Systems, Inc.

Best Overall: VOIP Vertical Solutions

* Avaya Inc.

Best VOIP: Industry-Specific

* Education - Avaya Inc.
* Financial Services - Cisco Systems, Inc.
* Healthcare - Cisco Systems, Inc.
* Manufacturing - Avaya Inc.
* Professional Services - Avaya Inc.
* Retail - Cisco Systems, Inc.
* State/Local Government - Nortel
* Transportation - Siemens Enterprise Communications

ที่มา: Nemertes Awards Seven Top VOIP Providers

Top VoIP Companies 2006

• Airvana
• Brix Networks
• Convergin
• Digium
• Empirix
• Firsthand Technologies
• GrandCentral
• Ingate Systems
• Iotum
• Jajah
• NexTone
• Nominum
• Psytechnics
• SIPPhone
• Sunrocket

Good international carriers

• ATT Global Hubbing
• Global Crossing
• Level 3 Communications
• Qwest Wholesale
• XO Communications

SIM roaming services

• 0044.co.uk
• sim4Travel.com
• globalsimcard.co.uk
• gosim.com
• telestial.com
• maxroam.com
• three.co.uk
• o2.co.uk

Links

• Tier 1 network