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Global PSTN

Give your communications platforms a voice with purpose-built Cloud Collaboration

Key Features

Cloud Voice Hub Certified Integrations

Global Direct in Dial Availability

PURPOSE-BUILT CLOUD COLLABORATION

Cloud collaboration, UC and Contact centre 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 70 countries, Cloud Voice Hub provides certified, secure cloud SIP PSTN connectivity to all major cloud collaboration, unified communications and contact centre services including Cisco (Webex Calling and UCM Cloud), Microsoft Teams (Direct Routing), Genesys, Avaya, Zoom and NICE InContact.

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ENTERPRISE BENEFITS:

Consolidate local PSTN in the Americas, EMEA and APAC

Single source, certified provider and PSTN management

Multi-platform on-net coordinated calling

CallTower Cloud SBCs eliminate need for customer SBCs

Zero-Outage, Globally Redundant Enterprise Service

KEY FEATURES:

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Global PSTN Coverage for Collaboration, UC and Contact centres Platforms

Consolidate local PSTN in the Americas, EMEA and APAC with local DID numbers and number portability in over 70 countries worldwide and fully integrated and certified with major collaboration providers including Cisco, Microsoft, Genesys, Avaya, Zoom and NICE InContact.

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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.

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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.

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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 70 countries for Microsoft Teams as an alternative to Microsoft calling plans and without the need for premise hardware.

CallTower delivers Operator Connect for Teams and Teams Direct Routing utilising CallTower’s Microsoft Certified Session Border Controllers (SBCs) to enable natively-connected, secure cloud voice in over 70 countries. The connexion from Microsoft Teams to our network is via a secure IP connexion and is delivered as an end-to-end service with quality, geo-redundancy and high-availability.

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CLOUD CONNECT FOR WEBEX CALLING

As a Cisco Certified Calling Provider, CallTower delivers  Cloud Connected for Webex Calling 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 70 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 centralised billing and management.
  • Global DID/DDI phone number availability.
  • In-country Call Termination with CLID and Special-Digits Localization.
  • Emergency Services Support
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Zoom Phone

CallTower’s Zoom phone empowers companies to make their #1 asset, people, connected, productive and happy by keeping information flowing across teams, time zones and projects, and giving team members the flexibility to work together from anywhere.

Modern Phone Solution
Full-featured Cloud PBX Domestic & International PSTN, Seamless workflow with Zoom Meetings

centralised Management
Single point of administration, call detail reporting, analytics & monitoring

Secure & Reliable
QoS delivered by an adaptive rate codec, End-to-end encryption (beta), globally distributed datacenters, secure HD voice

Robust Hardware Ecosystem
Broad set of hardware options from handsets to analogue devices and infrastructure.

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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 centres 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 70 countries.

  • Certified Webex Calling PSTN coverage in over 70 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 centralised billing and management.
  • Global DID/DDI phone number availability.
  • In-country Call Termination with CLID and Special-Digits Localization.
  • Emergency services support.

GLOBAL DIRECT IN DIAL AVAILABILITY:

More countries added regularly and the list changes frequently. Please contact your CallTower Representative for more detailed information and to verify service availability.

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Compare Country Local
Numbers
PSTN
Replacement
Number
Portability
Emergency
Services
Toll-Free
Free Phone, ITSF
Compare Country Local
Numbers
PSTN
Replacement
Number
Portability
Emergency
Services
Toll-Free
Free Phone, ITSF
Algeria
Angola
Argentina
Australia
Austria
Bahrain
Belgium
Brazil
Bulgaria
Canada
Chile
China
Colombia
Croatia
Cyprus
Czech Republic
Denmark
Dominican Republic
El Salvador
Estonia
Finland
France
Georgia
Germany
Greece
Hong Kong
Hungary
India
Indonesia Coming SoonComing SoonComing Soon
Ireland
Israel
Italy
Japan
Kenya
Latvia
Lithuania
Luxembourg
Malaysia
Malta
Mexico
Netherlands
New Zealand
Nigeria
Norway
Panama
Peru
Philippines Coming SoonComing SoonComing Soon
Poland
Portugal
Puerto Rico
Romania
Serbia
Singapore
Slovakia
Slovenia
South Africa
South Korea
Spain
Sweden
Switzerland
Taiwan Coming SoonComing SoonComing Soon
Thailand
Turkey
United Arab Emirates
United Kingdom
United States
Vietnam

*Confirm service availability with your CallTower representative. 

PSTN replacement YES means:
Access to in-country only dialable numbers, i.e., Toll-Free/Free-Phone, National numbers, and most shortcodes.
Caller ID (ANI) is guaranteed, and the call is marked safe if the country has RoboCalling/SPAM blocking.
Call enter country on in-country national trunking as usual for competitive local carrier operating in that country.

PSTN replacement NO Means:
Caller ID (ANI) is *NOT* guaranteed and could be marked as SPAM if dialling in-country or blocked.
The call enters the country as an International call, *not* as in-country local national trunks.
No access to in-country only numbers.

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CT CLOUD RECORDING

UC Compliance

More and more, enterprises are adopting Unified Communications (UC) platforms as they evolve toward a more distributed workforce. And CallTower is facilitating this shift by ensuring that the requirements of compliance are met along the way

Enterprise Call Recording

From the largest global financial services firms to SME startups, CallTower protects and supports the world’s businesses with robust and universal enterprise call recording solutions.

Our award-winning CT Coud Recording platform was the very first cloud-native solution, revolutionising enterprise call recording forever. Cloud-based recording allowed companies to decentralise operations, allowing multiple locations and remote staff to work securely and under the protection of industry-leading compliance at all times.

Connect

A revolutionary tool enabling users to easily personalise and control their CallTower services

CallTower enables our Customers to manage rapidly changing technologies through Connect – a user-friendly portal, created and developed in-house. This proprietary system ensures our customers can administer services without expertise in any one technology or hiring outside consultants to manage their UC solutions.

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