Troublshooting %VOICE_IEC-3-GW: SIP: Internal Error (1xx wait timeout): IEC=1.1.129.7.65.0
So this one was a doozy! I get a call from helpdesk advising me that some voip…
Cisco
Setting up a Linux Network Probe with Cisco RSPAN
In this tutorial I will go over the steps to setup an Ubuntu network probe hosted on…
Cisco RTMT – Installer User Interface Mode Not Supported
Last week I was working with Cisco TAC on a voice case that involved the use of…
Getting Started with Cisco Modelling Labs 2 Personal Edition
The long awaited successor to Cisco VIRL dropped last week. Say hello to Cisco Modelling Labs 2.0!…
Cisco Prime Infrastructure Flashing Console Cursor
Last week we upgraded Cisco Prime Infrastructure to its latest security patch level (3.7 update 3). So…
Using Cisco Voice Translation Rules with Telstra SIP Connect
Last year I was forced to transition all of our Telstra ISDN Voice circuits to Telstra SIP…
Cisco Wireless LAN Controller Access Point Certificate %DTLS-3-HANDSHAKE_FAILURE
I recently troubleshooted an issue wherein our Wireless LAN Controller was dropping access point connections. A quick…
Using Linux Commands on Cisco IOS
A neat feature of Cisco IOS and IOS-XE is the ability to enable Linux shell functions and…
Cisco ASA Dynamically open MS-RPC Ports
OK so this one is simple once you know how. TCP Port 135 (MS Remote Procedure Call…