US phone numbers for India's BPO industry. Get US DIDs and toll-free numbers with G.729-optimized routing built for high-volume India-to-US voice traffic.
Everything your India-based call center needs to serve US customers with carrier-grade voice quality.
Local numbers in every US area code plus toll-free 800/888/877/866/855/844 numbers. Your India-based agents present a US presence to every caller.
G.729 is the recommended codec for India-US routes, using only 8 kbps per call versus G.711's 64 kbps. Critical for BPOs running hundreds of concurrent calls over international bandwidth.
180-250ms typical round-trip latency on India-US routes. Optimized network paths through submarine cable corridors connecting Indian BPO hubs to US points of presence.
Connect via SIP registration (username/password) or IP authentication (static IP whitelist). Both methods supported simultaneously for flexible deployment.
All calls from your India call center are signed with STIR/SHAKEN attestation through our US network. This ensures your outbound calls to US customers are not flagged as spam.
Round-the-clock technical support from SIP/VoIP engineers who understand India-US routing, NAT traversal, and codec optimization for international call center deployments.
How Indian call centers use IPComms SIP trunking to serve US customers.
US toll-free and local numbers forwarded to your India call center via SIP. Callers dial a US number and are seamlessly connected to your agents in Bangalore, Hyderabad, or Mumbai.
Local presence dialing from India to US customers. Your agents call from US area-code numbers, increasing answer rates. STIR/SHAKEN signed for maximum deliverability.
Combined inbound and outbound on a single SIP trunk. Handle customer service, sales, lead generation, and collections from one platform with unified US number management.
India is the largest BPO market globally, with millions of call center agents serving US and international clients. IPComms provides the SIP trunking infrastructure that connects India's BPO workforce to US customers.
IT & BPO Capital
HITEC City Hub
Financial Services BPO
Gurgaon & Noida
Voice & Back Office
Emerging BPO Hub
India-US SIP trunk configuration details for your technical team.
G.729 (Primary - Recommended)
8 kbps per call. Ideal for India-US routes where bandwidth efficiency is critical. Supports hundreds of concurrent calls with minimal bandwidth.
G.711 ulaw (Secondary)
64 kbps per call. Best audio quality. Use when bandwidth is sufficient and maximum voice clarity is needed.
Authentication Methods
SIP registration (username/password) or IP authentication (static IP whitelist). Both supported simultaneously.
Typical Latency
180-250ms round-trip from India to US. Lower end from Bangalore, Hyderabad, and Mumbai due to direct submarine cable access.
Optimized Routing
Traffic routed through US PoPs with optimized paths to Indian submarine cable landing stations for minimum latency.
One of the longest-operating SIP trunk providers in the US
Uptime SLA with geo-redundant US infrastructure
Technical support from real SIP/VoIP engineers
India-based call centers connect to IPComms US SIP trunks by configuring their PBX (such as Asterisk, FreeSWITCH, or 3CX) with IPComms SIP credentials. You can authenticate via SIP registration (username/password) or IP authentication (static IP whitelist). Your agents in Bangalore, Hyderabad, Mumbai, or any Indian city make and receive calls using US phone numbers delivered over the internet.
G.729 is the recommended primary codec for India-to-US SIP calls. It uses only 8 kbps per call compared to G.711's 64 kbps, making it far more bandwidth-efficient for international routes. This is especially important for Indian BPOs running hundreds of concurrent calls. G.711 can be used as a secondary codec when bandwidth is sufficient and maximum audio quality is needed.
Yes. Indian BPOs can obtain US toll-free numbers (800, 888, 877, 866, 855, 844) through IPComms. These numbers are delivered via SIP trunking, allowing your India-based agents to receive inbound calls from US customers on toll-free numbers. Business verification is required. You can also get US local DIDs from any area code for outbound local presence dialing.
Typical round-trip latency from India to the US is 180-250ms, depending on your location and internet connectivity. Major BPO hubs like Bangalore, Hyderabad, and Mumbai generally see latency at the lower end of this range due to better submarine cable connectivity. IPComms optimizes routing through US PoPs to minimize latency. Calls remain high quality up to 300ms when using G.729 codec with proper jitter buffer configuration.
Get US phone numbers and carrier-grade SIP trunking for your India-based BPO operations. No contracts, no minimums.