VoIP Codecs Explained: G.711, G.729, G.722 and Opus
Which VoIP codec to use where: G.711 for trunks, G.722 HD voice in the office, G.729 for small links and Opus for…
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Tag: IP phone
Conference Call System for Offices: Ad-hoc, Handoff and Rooms
Three kinds of conference call on an IP PBX (desk phone, operator handoff and conference rooms), when to use each and how…
VoIP QoS and Voice VLAN: Network Setup for Clear IP Phone Calls
Set up VoIP QoS and a voice VLAN for IP phones: DSCP EF 46, LLDP-MED, bandwidth per codec, latency and jitter targets,…
IP Phone Directory: Build a Company Phonebook That Stays Current
Ways to build a company phonebook for IP phones: local contacts, remote XML, LDAP and PBX lists, plus display names, speed dials…
Call Centre Headsets: How to Choose the Right One for Agents
How to choose call centre headsets: USB vs 3.5 mm vs wireless, mono vs stereo, noise-cancelling microphones, comfort, home agents and a…
Structured Cabling for IP Phones: Cat6, PoE Budget and Patch Panels
Plan structured cabling for IP phones: outlets, Cat6 vs Cat6A, the 100 metre limit, PoE power budgets, patch panel labels and analog…
How to Choose an IP Phone for Your Office: A Buyer Checklist
What matters when you choose IP phones: SIP lines, HD voice, PoE, dual Ethernet, headset support, security, auto provisioning and support.
IP Phone vs Analog Phone: Which Should Your Office Use?
IP phones and analog phones compared on cabling, power, sound, features and cost, and when a mix of both on one IP…
PoE for IP Phones: Power, Switches and Power-Cut Planning
How Power over Ethernet works for IP phones, 802.3af vs PoE+, sizing a switch power budget, and keeping phones up during power…
SIP Phone Configuration: Register an IP Phone to a PBX
How to register a SIP phone to an IP PBX by hand: the settings you need, step by step set-up, recommended values…