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Estoy reforzando la infraestructura de voz de mi empresa y requiero un proveedor mayorista de VoIP que pueda cursar mi tráfico saliente con 100 % de preservación de CLI, utilizando rutas directas vía Vitelity y, de ser necesario, otros carriers igualmente certificados. El servicio se empleará exclusivamente para llamadas empresariales outbound; no necesito recepción de llamadas ni funciones extra como grabación, multilínea o integración CRM. La seguridad es prioritaria: espero soporte nativo para TLS/SRTP, autenticación por IP. También valoro la estabilidad de la ruta. Entrego como referencia mi infraestructura actual basada en PBX-Asterisk y softphones SIP; la conexión deberá ser plug-and-play bajo estos entornos. Entregables esperados: • bloques IP autorizados con CLI 100% garantizado. • Terminacion USA • Estabilidad de la ruta • Si cumples con estos requisitos técnicos y de seguridad, podemos avanzar de inmediato y escalar volúmenes según resultados.
Project ID: 40510704
8 proposals
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Active 7 days ago
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8 freelancers are bidding on average $1,943 USD for this job

I understand you're seeking a wholesale VoIP provider for 100% CLI preservation on outbound business calls, with a preference for direct routes via Vitelity. My experience in architecting similar robust, CLI-preserving VoIP solutions for enterprise clients ensures I can meet your exact requirements. My approach involves integrating directly with Vitelity using their API for optimal route control and CLI integrity. For any necessary fallback, I'll leverage pre-vetted alternative carriers known for direct routing and strict CLI handling. We'll implement native TLS/SRTP for secure signaling and media, coupled with IP authentication for enhanced security. A phased rollout will confirm stability and CLI accuracy before full deployment. Can you confirm your expected call volume and any specific geographical regions for outbound traffic? I'm confident we can establish a highly stable and secure outbound calling solution. Let's schedule a brief call to discuss the technical specifics.
$1,515 USD in 21 days
4.3
4.3

Dear Client, Good morning . How are you? I hope this proposal finds you well. I'M A CERTIFIED & EXPERIENCED EXPERT, WELL VERSED WITH THE REQUIREMENTS FOR YOUR PROJECT "Proveedor VoIP 100 % CLI (vitelity or other." This is to inform you that I have KEENLY gone through your project description, CLEARLY understood all the project requirements as instructed in your project proposal and this is to let you know that I will perfectly deliver as desired. Being in possession of all stated required skills, (Network Security, Telecommunications Engineering, SIP, Linux, Asterisk PBX, Cisco and VoIP), as this is my field of professional specialization having completed all certifications and developed adequate experience in the respective field, I hereby humbly request you to consider my bid for professional, quality and affordable services that meet all your requirements. I always guarantee timely delivery and unlimited revisions where necessary hence you are assured of utmost satisfaction when working with me. Please send me a message so that we can discuss more and seal the project. WELCOME.
$3,000 USD in 1 day
2.4
2.4

¡Perfecto! Puedo ayudarte como proveedor/partner mayorista VoIP para cursar únicamente tráfico saliente empresarial con 100% preservación de CLI, usando rutas directas vía Vitelity y, si hiciera falta, carriers certificados adicionales para mantener estabilidad de la ruta. Me enfoco en cumplir tus requisitos sin “extras” (solo outbound): - Bloques IP autorizados para garantizar CLI 100% en cada llamada. - Terminación USA. - Soporte nativo de seguridad: TLS/SRTP y autenticación por IP. - Plug-and-play con tu infraestructura basada en PBX-Asterisk y softphones SIP. Entregables: 1) Lista de rangos/Bloques IP autorizados asociados a la preservación de CLI. 2) Esquema de enrutamiento y verificación de estabilidad. 3) Confirmación de que no necesitas recepción ni funciones extra como grabación, multilínea o integraciones CRM. Podemos iniciar de inmediato y luego escalar volúmenes según resultados operativos y de calidad.
$1,500 USD in 7 days
0.0
0.0

As a seasoned Software Engineer with expertise in Linux, Network Security, and VoIP, I understand the intricate needs of strengthening infrastructure like yours. I am proficient in managing hardware like Asterisk PBX along with softphones SIP which makes me an ideal fit for your project. Working for enterprises, my top priority has always been data security - that's why I offer native support for TLS/SRTP and IP authentication to ensure that your outbound calls are perfectly safe. In addition to security, I emphasize stability in all my projects. My strong network programming skills and the experience of working with multiple carriers make me well-equipped to guarantee route stability throughout our collaboration. It is crystal clear what you want as deliverables from a provider and I am confident in my ability to deliver within your expectations. With my technical know-how and the quick connective solution, the whole process will be seamless leaving zero disruption in your daily operations. Lastly, as a committed professional, I guarantee 100% dedication to providing you only quality work which not just completes this project but offers a long-term solution to bolster your company’s communication infrastructure. +With me on your team, you can rest assured that my fast delivery and clear communication will keep us on track while my attention to detail ensures no requirement
$2,280 USD in 1 day
0.0
0.0

Hey , I am a US based Freelancer, I just finished reading the job description and I see you are looking for someone experienced in Cisco, Linux, VoIP. This is something I can do. Revisé cuidadosamente su necesidad y puedo ayudarle a dejar una ruta outbound estable para PBX-Asterisk y softphones SIP, con preservación de CLI, autenticación por IP y soporte para TLS/SRTP. Mi enfoque sería validar la terminación USA, revisar el enrutamiento directo con Vitelity u otros carriers certificados, y dejar la conexión lista para uso plug-and-play con sus bloques IP autorizados. Para comenzar, necesito conocer sus rangos IP públicos, el volumen estimado de llamadas salientes, y el detalle de su entorno SIP actual para ajustar la interconexión y asegurar estabilidad de ruta. Drop me a message before placing an order price can be discussed after discussion.
$1,500 USD in 4 days
0.0
0.0

Puedo proveer y configurar terminación VoIP mayorista con preservación de CLI al 100 %, rutas directas y estabilidad de nivel carrier. Trabajo con infraestructura basada en Asterisk, softphones SIP y entornos con autenticación por IP, TLS/SRTP y políticas anti‑fraude. Puedo entregarte bloques IP autorizados, rutas USA estables y un flujo plug‑and‑play compatible con tu PBX actual. He trabajado con proveedores como Vitelity y carriers equivalentes con certificación para tráfico empresarial, asegurando calidad, baja latencia y cumplimiento normativo. También puedo ayudarte a validar la ruta, monitorear calidad (ASR/ACD), y escalar capacidad según tus volúmenes. Si buscas un proveedor confiable con CLI garantizado y seguridad end‑to‑end, puedo avanzar de inmediato.
$2,000 USD in 15 days
0.0
0.0

Hi, Allen from Fort Worth here! I can help provision and validate an outbound-only wholesale VoIP termination setup for your Asterisk PBX/SIP softphone environment, with a focus on stable USA routes, IP-based authentication, TLS/SRTP where supported, and reliable CLI preservation for caller IDs your business is authorized to present. I’ll keep the scope lean and technical: no inbound routing, no CRM, no call recording, and no unnecessary PBX features. The setup would include authorized IP blocks, SIP trunk configuration, Asterisk-ready connection details, outbound dial plan testing, codec/transport validation, failover routing recommendations, and test calls to confirm CLI behavior across major USA destinations. For security and compliance, I’ll configure IP-authenticated SIP access, TLS/SRTP where the carrier route supports it, ACL restrictions, rate limits, and safe outbound policies. I’ll also verify route stability, latency, SIP response behavior, and caller ID pass-through. CLI preservation will be handled only for legitimate, authorized business numbers to avoid spoofing or compliance issues. Looking forward to working together! Best regards, Allen
$1,500 USD in 2 days
0.0
0.0

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