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PSTN Replacement / Local Calling with Telnyx

Establish a local presence anywhere in the world. Buy a local number, route calls via Telnyx's Tier-1 in-country carriers, and ensure every call is seen by the callee as a local call.

Written by Ashish Muni
Updated this week

What is local calling?


A call is considered local when the caller's number (CLI) and the destination number (CLD) belong to the same country.

For example, a UK number calling another UK number, or a Brazilian number calling another Brazilian number.

The challenge is that local calls cannot enter a country through international exchanges. If a business operating globally tries to make a local-looking call using standard international routing, downstream carriers in that country will block or reject it, protecting their network from spoofing and unauthorised CLI usage.

This results in failed calls, SIP 503 errors, and poor call completion rates.


The Telnyx local calling solution

Telnyx solves this by routing your calls directly through Tier-1 carrier partners within each country, bypassing international exchanges entirely.

Here is how it works:

  1. Your caller originates a call from anywhere in the world

  2. The call arrives at the Telnyx network

  3. Telnyx identifies the destination country and routes the call via its direct in-country Tier-1 carrier interconnect

  4. The call is delivered locally, the callee sees a local number and receives the call as if it originated from within their country

This means your business can establish a genuine local presence in any supported country, regardless of where your team or infrastructure is physically located.


Key benefits

  • Higher call completion rates — calls are no longer blocked at international exchanges

  • Local caller ID delivered correctly — the callee sees a local number, not an international one

  • Establish local presence — build customer trust by appearing local in every market you serve

  • No extra charges or configuration — the feature is built into your Telnyx-issued local number


What are the requirements for using Local Calling?

There are no additional fees or complex setup steps. You simply need a Telnyx number with the Local Calling feature enabled.

Step 1 — Get a local number with the Local Calling feature

You can purchase a number directly in the Telnyx Portal:

  1. Log in to the Telnyx Portal

  2. Navigate to Numbers → Buy numbers

  3. Select the destination country

  4. Filter results by the Local Calling feature

  5. Choose a number and complete the purchase

    Alternatively, email numbering@telnyx.com to request a number, or port your existing number to Telnyx — see the porting policy & procedure guide.

  6. Use this same number as CLI on your outbound calls.

Review our Caller ID Policy and Number Formats which can help with localisation preferences.


What if I don't use the local calling feature?

If you are not able to purchase a Telnyx local number, it is recommended to use a CLI from a different country than the destination. Calls with a matching foreign CLI are the most likely to be blocked.

If you use a non-Telnyx number, calls will be routed via Tier-2 international routes where caller ID delivery and call completion are best-effort and not guaranteed.

⚠️ Note: If you enable call forwarding on your local number, local calling may not complete successfully if the caller's CLI matches the forwarded destination number. Telnyx can only guarantee local call completion when the originating number is used as the CLI.


Supported countries

Telnyx currently supports local calling for the following countries. This list continues to grow as we expand our global carrier network.

Country

Country Code

Albania

+355

Argentina

+54

Australia

+61

Austria

+43

Bahrain

+973

Bangladesh

+88

Belgium

+32

Belize

+501

Benin

+229

Bolivia

+591

Bosnia and Herzegovina

+387

Brazil

+55

Bulgaria

+359

Cameroon

+237

Chile

+56

China

+86

Colombia

+57

Costa Rica

+506

Croatia

+385

Cyprus

+357

Czech Republic

+420

Democratic Republic of the Congo

+243

Denmark

+45

Dominican Republic

+1829

El Salvador

+503

Estonia

+372

Equador

+593

Finland

+358

France

+33

French Guiana

+594

Georgia

+995

Germany

+49

Ghana

+233

Greece

+30

Guadeloupe

+590

Guatemala

+502

Honduras

+504

Hong Kong

+852

Hungary

+36

Indonesia

+62

Ireland

+353

Israel

+972

Italy

+39

Japan

+81

Kenya

+254

Latvia

+371

Lithuania

+370

Luxembourg

+352

Malaysia

+60

Martinique

+596

Mexico

+52

Mozambique

+258

Netherlands

+31

New Zealand

+64

Nicaragua

+505

Nigeria

+234

Norway

+47

Oman

+968

Pakistan

+92

Panama

+507

Paraguay

+595

Peru

+51

Philippines

+63

Poland

+48

Portugal

+351

Romania

+40

Russia

+7

Rwanda

+250

Réunion

+262

Saudi Arabia (KSA)

+966

Serbia

+381

Singapore

+65

Slovakia

+421

Slovenia

+386

South Africa

+27

South Korea

+82

Spain

+34

Sweden

+46

Switzerland

+41

Taiwan

+886

Thailand

+66

U.S. Virgin Islands

+1340

United Arab Emirates

+971

United Kingdom

+44

Uzbekistan

+998

Vietnam

+84

Zambia

+260

Telnyx continues to expand its global presence and while we do allow the purchase of DID/numbers from more countries than listed above, countries not listed above will only have inbound local calling guaranteed at this time and not outbound local calling.

Depending on your use case, please feel free to reach out to your Account Manager / Sales representative here at sales@telnyx.com to discuss your requirements further.

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