US Numbers for Global Operations
Everything your international call center needs to serve US customers professionally.
US DIDs & Toll-Free
Local numbers in every US area code plus toll-free 800/888/877 numbers. Your international agents present a US presence to callers.
Low-Latency Routing
Optimized network paths to major BPO markets. Our infrastructure is tuned for the best possible audio quality on international routes.
G.711 & G.729 Codecs
Support for bandwidth-efficient G.729 (8 kbps) and high-quality G.711 (64 kbps). Automatic codec negotiation for optimal quality.
SIP Registration & IP Auth
Connect via SIP registration (username/password) or IP authentication (static IP whitelist). Both methods supported simultaneously.
Business Verification
All international accounts go through business verification. This protects our network integrity and ensures STIR/SHAKEN compliance for your calls.
24/7 Support
Round-the-clock technical support from engineers who understand international SIP configurations, NAT traversal, and codec optimization.
Serving Call Centers Worldwide
Optimized SIP trunking for the world's major BPO markets across 17 countries. Select your region for country-specific details.
Americas & Nearshore
Low-latency connectivity with US time zone alignment. G.711 codec recommended for all nearshore routes.
Colombia
Leading nearshore BPO destination. Bogota, Medellin, Barranquilla hubs.
40-80ms latency 路 G.711 馃嚚馃嚪Costa Rica
Premium nearshore hub with highly educated bilingual workforce.
30-60ms latency 路 G.711 馃嚘馃嚪Argentina
Growing tech and BPO hub. Buenos Aires, Cordoba, Rosario.
50-100ms latency 路 G.711 馃嚙馃嚪Brazil
Largest economy in Latin America. Sao Paulo, Rio, Curitiba hubs.
60-120ms latency 路 G.711 馃嚛馃嚧Dominican Republic
Caribbean nearshore with strong US cultural ties. Santo Domingo hub.
30-60ms latency 路 G.711 馃嚞馃嚬Guatemala
Growing Central American BPO destination. Guatemala City hub.
30-70ms latency 路 G.711 馃嚟馃嚦Honduras
Emerging nearshore BPO market. San Pedro Sula, Tegucigalpa.
35-75ms latency 路 G.711Asia-Pacific
The world's largest BPO markets. G.729 codec recommended for bandwidth efficiency on trans-Pacific routes.
India
World's largest BPO market. Bangalore, Hyderabad, Mumbai, Delhi NCR.
180-250ms latency 路 G.729 馃嚨馃嚟Philippines
#1 offshore call center destination. Metro Manila, Cebu, Clark.
150-220ms latency 路 G.729 / G.711 馃嚥馃嚲Malaysia
Multilingual BPO hub in Southeast Asia. Kuala Lumpur, Cyberjaya.
160-240ms latency 路 G.729 馃嚮馃嚦Vietnam
Fast-growing outsourcing destination. Ho Chi Minh City, Hanoi.
170-250ms latency 路 G.729Europe
Multilingual BPO markets with strong technical talent. G.711 recommended for Western routes, G.729 for Eastern.
Poland
Major European BPO hub. Warsaw, Krakow, Wroclaw, Katowice.
100-160ms latency 路 G.711 馃嚪馃嚧Romania
Growing IT and BPO sector. Bucharest, Cluj-Napoca, Timisoara.
120-180ms latency 路 G.711 馃嚭馃嚘Ukraine
Strong tech talent and multilingual workforce. Kyiv, Lviv, Kharkiv.
130-190ms latency 路 G.729Middle East & Africa
English, French, and Arabic-speaking BPO markets with dual US/EU time zone coverage.
South Africa
Major English-speaking BPO destination. Cape Town, Johannesburg.
200-300ms latency 路 G.729 馃嚜馃嚞Egypt
Multilingual BPO market (Arabic, English, French). Cairo, Alexandria.
150-220ms latency 路 G.729 馃嚬馃嚦Tunisia
Francophone BPO hub serving US and European markets. Tunis, Sfax.
140-210ms latency 路 G.729How It Works
Get your international call center connected with US numbers in four steps.
Sign Up
Create your IPComms account through our online portal. No contracts or minimum commitments required.
Verify Business
Complete our business verification process. This ensures network integrity and STIR/SHAKEN compliance for your calls.
Get US Numbers
Choose local DIDs from any US area code and/or toll-free numbers. Numbers are provisioned instantly.
Connect SIP Trunk
Configure your PBX with our SIP credentials. We support Asterisk, FreeSWITCH, 3CX, and all standard SIP platforms.
International SIP Trunking FAQ
Can an international call center get US phone numbers?
Yes. International call centers and BPOs can obtain US local and toll-free numbers through IPComms. These numbers are delivered via SIP trunking, allowing your offshore agents to make and receive US calls as if they were located in the United States. Business verification is required for all international accounts.
What codecs work best for international SIP trunking?
For international SIP trunking, G.729 is recommended for bandwidth-constrained routes as it uses only 8 kbps per call. G.711 (ulaw/alaw) provides the best audio quality at 64 kbps per call and is ideal when bandwidth is sufficient. IPComms supports both codecs and can negotiate the optimal codec automatically based on your connection quality.
What is the latency for international SIP calls?
Typical round-trip latency for international SIP calls varies by region: Americas/nearshore (Colombia, Costa Rica, Dominican Republic) 30-80ms, Europe (Poland, Romania, Ukraine) 100-190ms, Asia-Pacific (India, Philippines, Malaysia, Vietnam) 150-250ms, and Africa/Middle East (South Africa, Egypt, Tunisia) 140-300ms. IPComms optimizes routing to minimize latency, and calls remain high quality up to 300ms round-trip when using appropriate codecs and jitter buffers.
Do I need a US office to get US SIP trunks?
No, you do not need a US office. IPComms provides US SIP trunking to verified international businesses. You will need to complete a business verification process that confirms your company identity and intended use. This process protects against fraud while making US numbers accessible to legitimate international BPO and call center operations.