DID 02, Ribbon SBC, and direct carrier interconnection for enterprise-grade voice quality on a dedicated voice path.
Enterprise-grade SIP Trunk on a dedicated voice path. Not reselling. Thai DID numbers including Bangkok 02 and provincial codes, Ribbon SBC, and direct interconnection to NT and True.
SIPPER runs SIP Trunk on our own Pure VoIP Network, a voice-only lane connected directly to NT (National Telecom) and True Corporation, with no data, video, or other services competing for bandwidth.
Most SIP Trunk providers in Thailand resell capacity from carriers like NT (National Telecom) or True Corporation. SIPPER runs SIP Trunk on a Pure VoIP Network, a voice-only lane connected directly to NT and True, with no data, video, or other services competing for bandwidth.
A voice-only network with no traffic mixing. Voice packets get priority because nothing else is on the line, not just QoS on a shared pipe. Direct interconnection to NT (National Telecom) and True Corporation.
Enterprise-grade Ribbon SBC SWe Edge supporting up to 2,000 concurrent calls with 1:1 active-standby HA and mid-call failover. Microsoft-certified for Teams Direct Routing, Zoom Phone BYOC, and Webex Local Gateway.
Use mobile numbers as outbound caller ID (Flexible CLI / CLIP No Screening). Higher answer rates for sales and outbound teams, recipients tend to answer mobile numbers more readily than landlines.
A complete feature set for enterprise SIP Trunk, from Thai DID numbers to multi-platform integration.
DID numbers in Bangkok and provincial regions. Port existing numbers or activate new ones. Geographic, toll-free, and mobile numbers via direct interconnection to carriers NT and True.
Pay per concurrent call, not per user or per minute. Add channels instantly without installing physical lines. Scale up or down on demand.
SIP Trunk packages include free domestic calling. The 12-hour Buffet plan offers unlimited concurrent calls during business hours (choose 6:00-18:00, 7:00-19:00, or 8:00-20:00). Designed for outbound contact centers and sales teams.
TLS-encrypted signaling and SRTP-encrypted media via SDES key exchange. Ribbon SBC provides topology hiding, DoS/DDoS protection, rate limiting, and rogue RTP filtering.
Display office, mobile, or customer numbers as outbound caller ID. Customer CLI shows the customer's number on outbound calls. Mobile CLI lets PBX users display their mobile number, higher answer rates for sales teams.
A single SIP Trunk works with Yeastar Cloud PBX, 3CX, Microsoft Teams (Direct Routing), Zoom Phone (BYOC), Asterisk, FreePBX, Cisco, Avaya, and any standard SIP platform. No separate contracts per platform.
Whether you use PBX, Microsoft Teams, or a contact center, SIPPER SIP Trunk provides the voice connectivity layer your platform needs.
Pair with Yeastar or 3CX Cloud PBX on the Pure VoIP Network. One provider for both PBX and trunk, single point of contact for support and billing.
Connect Teams Phone to PSTN via Direct Routing. Keep your existing numbers, choose your own carrier, and avoid per-user Calling Plans charges.
Replace ISDN PRI/BRI or analog lines with SIP. Compatible with any standard SIP-capable PBX, Yeastar, 3CX, Asterisk, FreePBX, Cisco, Avaya, and others.
SIPPER SIP Trunk works with any SIP-capable platform. See how it integrates with the most common setups.
When you choose SIPPER Cloud PBX, SIP Trunk is included. The PBX connects to our Pure VoIP Network internally, no public internet for voice traffic between PBX and trunk. Calling packages with bundled minutes available for the highest quality.
SIPPER's Ribbon SBC (Microsoft-certified) connects Teams Phone to SIP Trunk. Calls flow through the Pure VoIP Network to NT and True carriers. Keep your existing numbers, avoid per-user Calling Plan fees, and get enterprise-grade voice quality with mid-call failover.
Use mobile numbers as outbound caller ID on SIP Trunk lines. Packages of 5, 10, 20, or 30 mobile numbers with concurrent channels. Bundled calling credit included or add the 12-hour Buffet plan for unlimited business-hour calling. Designed for outbound sales teams and contact centers where mobile caller ID improves answer rates.
Connect any SIP-capable PBX to SIPPER SIP Trunk via dedicated or internet connection. We provide SIP credentials, codec configuration (G.711, G.722, G.729, Opus), and firewall guidance. Compatible with Yeastar Appliance, 3CX, Asterisk, FreePBX, Cisco, Avaya, Zoom Phone (BYOC), and Webex.
Tell us about your current phone system, call volume, and requirements. We'll design a SIP Trunk that fits your platform and budget.