Least Cost Routing on a PBX: Cut Call Costs Across Operators
How least cost routing works on an IP PBX: outbound routes by dial pattern, ordered trunk sequences, overflow when a trunk is…
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Tag: SIP trunk
How Many SIP Channels Do I Need? Sizing a SIP Trunk with Erlang B
Work out how many SIP channels you need from busy hour calls and call length with Erlang B, with worked examples, bandwidth…
Multi Branch Phone System: Connect Branch Offices on One PBX
How to connect a head office and branches on one phone system: a central IP PBX or a PBX per site linked…
PRI to SIP Trunk Migration: A Step-by-Step Guide
How to move from PRI lines to SIP trunks without downtime: running both in parallel, routing numbers in stages, failover and common…
PBX System Price in India: What Really Decides the Cost of an IP PBX
Users, phone lines, phones, edition, hardware and support: the six things that decide the price of a PBX system in India, plus…
SIP Trunk in India: How It Works, Costs and How to Switch from PRI
What a SIP trunk is, how it compares with PRI and analog lines, which Indian operators offer it, rules to follow and…