SIP & Telecom⏱ 7 min read• August 26, 2026• 👁 393 views

Phone Number Porting & DID Management: Complete Step-by-Step Guide

Keep your established business numbers while upgrading to modern cloud PBX. Complete walkthrough of the LNP (Local Number Portability) process, regulatory compliance, and zero-downtime execution.

Published: August 26, 2026

1. What is Local Number Portability (LNP)?

Local Number Portability (LNP) is the regulatory process that allows businesses to transfer existing phone numbers from legacy carriers to a modern Cloud PBX provider without changing the number.

2. Zero-Downtime Porting Workflow

  1. LOA (Letter of Authorization) Submission: Authorizes SanalPBX to request number release on your behalf.
  2. FOC (Firm Order Confirmation) Date: The carrier agrees on an exact time window for cutover (typically off-peak hours).
  3. Seamless Switchover: Inbound routing switches instantly to SanalPBX media clusters with zero dropped calls.
Topics & Tags
#Number Porting#DID#Toll Free#Telecom Compliance#Cloud PBX
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