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Welcome to the LANCOM Support Knowledge Base
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Knowledge Base articles about Voice-over-IP (VoIP) with LCOS
Created by
LANCOM Redaktion
, last updated by
LANCOM Review User
on
May 08, 2025
1 minute read
Title
Creating firewall rules with recommended QoS settings for VoIP connections
Configuration wizards for use with the LANCOM rollout wizard
Troubleshooting: After updating to LCOS 10.42, problems with telephony occur when using a SIP PBX
Using the RJ11 twin adapters for connecting up to four analog terminals
Modifying the 'connected number' in ISDN for outgoing calls
Adding additional SIP single accounts with the Setup Wizard
Explaining VoIP trace: Inbound phone call on a single account with an ISDN subscriber
Clock accuracy with LANCOM VoIP routers
Configuring calling-number suppression for outgoing calls to selected numbers
Setting up a VPN connection between an Alcatel DeskPhone and a LANCOM router for connecting to an Alcatel OXO PBX (IKEv1)
Further articles on this topic:
Page:
Knowledge Base documents & tutorials for the LANCOM R&S®Unified Firewalls
Page:
Knowledge Base articles on the LANCOM Management Cloud (LMC)
Page:
New & recently updated knowledge base articles
Page:
Knowledge Base articles about Wireless LAN with LCOS & LCOS LX
Page:
Knowledge Base articles about Switches & Switching with LCOS SX
Page:
Knowledge Base articles about LANtools
Page:
Knowledge Base articles about LANCOM Wireless ePaper
Page:
Knowledge Base articles bout Network Connectivity & VPN with LCOS
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