Enterprise Voice
Connectivity
Connect your PBX, contact center, or voice app to the world with elastic SIP trunks, global DIDs, HD audio, and carrier-grade reliability.
100+
Countries
HD
Voice Quality
99.99%
Uptime SLA
24/7
Support
Global DIDs
Instant provision
Elastic
Capacity
Failover
Always online
Carrier-Grade SIP Trunking
Everything you need to connect enterprise voice systems with reliability, clarity, and scale.
DID Numbers
Provision local and international DIDs across 100+ countries with instant activation and flexible number inventory.
Inbound & Outbound
Full-duplex SIP trunking for inbound and outbound calling with transparent, per-minute pricing.
HD Voice Codecs
Crystal-clear audio with G.711, G.729, Opus, and wideband HD codecs optimized for enterprise quality.
Automatic Failover
Multi-path routing and redundant PoPs keep calls connected even during carrier or network outages.
Elastic Capacity
Scale concurrent channels on demand—from a handful of lines to thousands—without hardware upgrades.
Number Porting
Port existing numbers with guided LNP workflows, status tracking, and minimal downtime.
Call Recording
Optional dual-channel recording with secure storage, retention policies, and compliance-ready export.
Multi-Region PoPs
Global points of presence reduce latency and improve call quality for regional and international traffic.
Built for Uptime & Quality
Multi-region infrastructure designed for enterprise voice workloads.
Primary PoP
Low-latency edge points of presence
Redundant Paths
Multi-carrier failover routing
Secure Trunks
TLS, SRTP, and IP ACL options
Live Monitoring
Quality metrics and call analytics
Voice Connectivity for Every Stack
From contact centers to programmable voice platforms.
Contact Centers
Power inbound queues and outbound campaigns with elastic SIP capacity and high concurrent call volumes.
PBX Connectivity
Connect on-prem or cloud PBX systems to the PSTN with standard SIP and secure trunk authentication.
Call Centers at Scale
Handle seasonal spikes with elastic channels, failover routes, and multi-region termination.
International Calling
Reach customers worldwide with competitive international rates and local DID presence.
Voice Apps & IVR
Terminate and originate calls for programmable voice platforms, IVR, and notification systems.
Disaster Recovery
Keep critical voice paths online with redundant trunks, overflow routing, and automatic failover.
Monitor Quality in Real Time
Track concurrent sessions, ASR, ACD, MOS, and latency across every trunk with live dashboards and alerts.
Per-Minute + Monthly DIDs
Transparent usage pricing with volume discounts as you scale.
Starter
Pay-as-you-go SIP for small teams
- Pay-per-minute usage
- Up to 10 concurrent channels
- Local DID rentals available
- Standard codecs (G.711, G.729)
- Email support
Business
Best value for growing call volumes
- Volume-based minute rates
- Up to 100 concurrent channels
- Monthly DID packages
- HD codecs + call recording
- Number porting support
- Priority support
- 99.95% SLA
Enterprise
Dedicated capacity and global coverage
- Custom rates & commitments
- Unlimited concurrent channels
- Global multi-region PoPs
- Dedicated SIP endpoints
- 24/7 support + account manager
- 99.99% SLA guarantee
- Custom integrations
Connect SIP in Minutes
Point your PBX at our SIP endpoints or manage numbers and trunks programmatically with the Sendexa REST API.
// Provision DIDs with sendexa-sip
import { SipClient } from 'sendexa-sip';
const sip = new SipClient({
apiKey: process.env.SENDEXA_API_KEY,
});
// Search available numbers
const available = await sip.numbers.search({
country: 'GH',
type: 'local',
limit: 5,
});
// Purchase a DID and attach to trunk
const number = await sip.numbers.purchase({
phoneNumber: available[0].phoneNumber,
trunkId: 'trunk_primary_us',
});
// List active DIDs via REST
// GET /v1/sip/numbers
console.log('Provisioned:', number.e164);100+
Countries
50M+
Minutes / mo
5,000+
Businesses
99.99%
Uptime
Frequently Asked Questions
Everything you need to know about Sendexa SIP Trunking.
What is SIP trunking?
SIP trunking connects your PBX or voice application to the public telephone network over the internet using Session Initiation Protocol. You get inbound and outbound calling without traditional PRI or analog lines.
How are minutes and DIDs billed?
Calls are billed per minute based on destination and direction. DID numbers are billed monthly per number. Business and Enterprise plans unlock lower per-minute rates and bulk DID packages.
Which codecs do you support?
We support G.711 (PCMU/PCMA), G.729, Opus, and HD wideband codecs. Codec preference can be negotiated per trunk for quality and bandwidth balance.
Can I port my existing numbers?
Yes. Number porting is supported in most regions. Our team guides you through LOA, carrier validation, and cutover scheduling to minimize downtime.
How does failover work?
You can configure primary and secondary SIP endpoints, overflow numbers, and multi-region routes. If a path fails health checks, traffic is automatically redirected.
Is call recording available?
Yes. Optional dual-channel recording can be enabled per trunk or call. Recordings are stored securely with configurable retention and export options.
How do I provision DIDs and manage capacity?
Use the Sendexa dashboard or REST API to search, purchase, and manage DIDs. Concurrent channel limits can be adjusted instantly on Business and Enterprise plans.
Is there a free trial?
Yes. New accounts can trial SIP connectivity with test credits, sample DIDs where available, and sandbox endpoints so you can validate call quality before going live.
Ready for Enterprise Voice?
Connect SIP trunks, provision DIDs, and scale concurrent channels with carrier-grade reliability.