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Endstream Communications, LLC. is a facilities-based VoIP carrier founded in 2007 and headquartered in New York. It primarily serves wholesale carriers, VoIP resellers, call centers/BPOs, service providers, and mid-to-large enterprises. It is not a typical SMS or email API platform; instead, its core focus is voice communications, with services including VoIP termination, DID, Toll-Free, SIP Trunking, PRI/Virtual POTS, calling card platforms, E-Fax, internet access, and data center colocation.
In terms of channels, Endstream clearly covers voice and fax use cases, but there is no indication of SMS, email, or IM capabilities. For geographic coverage, VoIP termination supports the United States and international destinations; DID covers more than 3,000 U.S. markets and 30 countries; Toll-Free covers more than 3,000 U.S. rate centers and 10 countries. Its technical integration style is closer to that of a traditional carrier, supporting SIPv2, H.323, G.729, G.711, G.723.1, T.38, and DTMF, with Asterisk configuration examples and CDRs available. The official website highlights multiple POPs, SoftSwitch clusters, high-quality U.S. routing, and some Tier 1 international routes, but does not publish verifiable performance metrics such as SLA, ASR, ACD, latency, or packet loss.
Pricing transparency is moderate. The latest VoIP termination rates must be requested by email at [email protected]; Toll-Free is billed per minute, with discounts based on usage and committed volume; DID offers both per-minute and flat-rate plans. The FAQ notes that SIP Trunks typically cost around $20-25 each, and long-distance rates can be below 2 cents per call. Billing can be weekly or monthly after credit approval, and prepaid billing is also supported. Payment methods include ACH, wire transfer, PayPal, and credit cards.
The strengths are a complete voice product lineup, making it suitable for wholesale and high-concurrency enterprise telephony scenarios; relatively clear documentation on protocols, codecs, and Asterisk compatibility; broad U.S. number resource coverage; and support for number porting. The drawbacks are that the website feels traditional, with limited information on modern REST APIs, SDKs, Webhooks, or a self-service dashboard; rates require manual inquiry; and compliance, anti-fraud, privacy, and STIR/SHAKEN information is not disclosed, so further due diligence is needed during evaluation.
Endstream is better suited to customers that already have PBX, SIP gateway, or wholesale voice operations capabilities, such as call centers, resellers, calling card platforms, and enterprises looking to replace PRI/POTS with SIP Trunking. The main content does not provide information on access from mainland China. Although PayPal and credit cards are supported, there is no mention of RMB payments, local invoicing, or Chinese-language support. For China-focused domestic business, Alibaba Cloud Communications, Tencent Cloud Communications, and Huawei Cloud Communications can also be evaluated; for global APIs and a stronger developer ecosystem, Twilio, Telnyx, Bandwidth, and Plivo are relevant alternatives.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on endstream.com official site.
endstream.com is an United States messaging provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach endstream.com directly.