Global PSTN.

Give your communications platforms a voice.

 

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PURPOSE-BUILT CLOUD COLLABORATION

Cloud collaboration, UC and Contact Center tools have quickly enabled the new remote and distributed worker environment. However, these powerful “internal” communications tools often have limited access to the “outside” PSTN and call routing integration that enable a complete, cost effective enterprise telephony solution.

Cloud Voice Hub, the evolution of CallTower’s award-winning global SIP trunking service, is purpose-built to solve these challenges. Available in over 175 countries, Cloud Voice Hub provides certified, secure cloud SIP PSTN connectivity to all major cloud collaboration, unified communications and contact center services including Cisco (Webex Calling and UCM Cloud), Microsoft Teams (Direct Routing), Genesys, Avaya, Zoom and NICE InContact.

ENTERPRISE BENEFITS:

Consolidate local PSTN in the Americas, EMEA and APAC

CallTower Cloud SBCs eliminate need for customer SBCs

Single source, certified provider and PSTN management
Zero-Outage, Globally Redundant Enterprise Service
Multi-platform on-net coordinated calling

KEY FEATURES:

Global PSTN Coverage for Collaboration, UC and Contact Centers Platforms

Consolidate local PSTN in the Americas, EMEA and APAC with local DID numbers and number portability in over 175 countries worldwide and fully integrated and certified with major collaboration providers including Cisco, Microsoft, Genesys, Avaya, Zoom and NICE InContact.

Complete PSTN Service Features

Cloud Voice Hub provides complete local PSTN capabilities including local, long distance, on-net calling, toll-free, directory assistance, caller ID and emergency services.

Multiple Platform Integration and Migration Flexibility

Whether you have a single platform requiring certified cloud PSTN or multiple platforms requiring certified cloud PSTN and on-net calling capability, CallTower’s Cloud Voice Hub has you covered. CallTower integrates disparate platforms with certified, cloud-based SBC on-net call routing which greatly simplifies management, reduces cost and enables more flexible migration strategies.

Certified Solutions Ensuring Performance

CallTower has certified its global PSTN infrastructure and networks with major collaboration providers including Cisco (Webex Calling and UCM Cloud), Microsoft Teams Direct Routing, Genesys, Avaya, Zoom and NICE InContact. Cloud Voice Hub combines these world-class collaboration tools with our world-class SIP PSTN services to provide a complete communications solution to meet the most challenging customer requirements.

CLOUD VOICE HUB CERTIFIED INTEGRATIONS:

Microsoft Teams

MICROSOFT TEAMS

Enable full native PSTN voice capability to over 75 countries for Microsoft Teams as an alternative to Microsoft calling plans and without the need for premise hardware.

Direct Routing utilizes CallTower’s Microsoft Certified Session Border Controllers (SBCs) to deliver natively-connected, secure cloud voice in over 75 countries. Connection from Microsoft Teams to our network is via a secure IP connection and is delivered as an end-to-end service with quality, geo-redundancy and high-availability.

Cisco

CISCO UCM CLOUD PSTN

CallTower is Cisco’s only certified global Cloud Connected PSTN Provider(CCPP) offering SIP Trunk services to Cisco UCM Cloud. UCM Cloud is hosted in Cisco’s Webex data centers across the globe and offers the familiar CUCM design flexibility, features and user experience providing an ideal migration path to the cloud for enterprise customers. CallTower integrates its global dedicated, redundant infrastructure natively with Cisco to provide secure, QoS-based PSTN in over 100 countries.

  • Certified Webex Calling PSTN coverage in over 100 countries covering Americas, EMEA and APAC.
  • Seamless management via CUCM.
  • Dedicated, redundant global infrastructure for secure, QoS-based calling.
  • Consolidation of multiple country/market PSTN into centralized billing and management.
  • Global DID/DDI phone number availability.
  • In-country Call Termination with CLID and Special-Digits Localization.
  • Emergency services support.

Cisco Webex

WEBEX CALLING – CLOUD CONNECTED PSTN PARTNER (CCPP)

With Cloud Connected PSTN (CCPP) option, customers can use CallTower for their PSTN access. Through CCPP, Cisco seamlessly interconnects with CallTower to enable Webex Calling customers to have economical and reliable global PSTN in the cloud – without the need for any premises-based SBC/gateway.

  • Certified Webex Calling PSTN coverage in over 100 countries covering Americas, EMEA and APAC.
  • Seamless management via Cisco Control Hub.
  • Dedicated, redundant global infrastructure for secure, QoS-based calling.
  • Consolidation of multiple country/market PSTN into centralized billing and management.
  • Global DID/DDI phone number availability.
  • In-country Call Termination with CLID and Special-Digits Localization.
  • Emergency Services Support

INTERNATIONAL COVERAGE CAPABILITIES 

From single site local deployments to international multisite deployments, CallTower has you covered with service coverage and certified install staff in over 75 countries.

Argentina

Bosnia and Herzegovina

South Korea

Russian Federation

Brazil

Bulgaria

Taiwan

Serbia

Canada

Croatia

Thailand

Slovakia

Chile

Cyprus

Vietnam

Spain

Colombia

Czech Republic

Africa & Middle East

Sweden

Dominican Republic

Denmark

Benin

Switzerland

Ecuador

Estonia

Georgia

Ukraine

El Salvador

Finland

Ghana

United Kingdom

Guatemala

France

Israel

Asia

Mexico

Germany

Kenya

China

Nicaragua

Greece

Saudi Arabia

Hong Kong

Panama

Hungary

Turkey

India

Peru

Iceland

Uganda

Indonesia

Puerto Rico

Ireland

United Arab Emirates

Japan

United States

Italy

Oceania

Kazakhstan

Uruguay

Latvia

Australia

Malaysia

Venezuela

Lithuania

New Zealand

Russian Federation

Virgin Island (US)

Malta

Netherlands

Serbia

Europe

Monaco

Norway

Austria

Montenegro

Poland

Belarus

Philippines

Portugal

Belgium

Singapore

Romania

CallTower Connect

CallTower Connect simplifies the set-up and management of CallTower services like Cisco & Microsoft Teams – facilitated within one easy to use online or mobile app. The provisioning application is launched by an end-user or company administrator to add or manage CallTower hosted services. The workload of administrators will decrease as users gain access to a simplified panel where changes to Cisco can be made without a call to support.

Learn More

RELEVANT LINKS

CallTower’s Global PSTN

3 Simple Steps: CallTower’s Global PSTN