VoIP networks, VoIP phones, VoIP extensions, VoIP everything. VoIP seems to be one of those black box buzz words that IT pros toss around, like the “CLOUD!” But what is really going on behind the scenes? How does VoIP protocols actually work? How can I setup a Call System? How do I get an outside number people can use to dial me?
This next series of blog posts (Part1, Part2, Part3) are dedicated to walking through the many aspects related to VoIP(Voice over Internet Protocol) and it’s features.
- The Lab — Our Network pieces.
- SIP — Life blood of VoIP
- FreePBX/Asterisk — Call System Exchange
- Phone Provisioning (Manual/Auto)
- Manual Provisioning with Zoiper, Liphone, UbiPhone
- Auto-provisioning with Cisco 7941G and 7945G (7961G,7965G)
- Making your first VoIP call!
- VoIP SIP Termination — Where VoIP ends and PSTN begins
- SIP Trunks and DID(external PTSN numbers)
- Outbound and Inbound Call Routing
- Optional: Install g729 codec
PART #3 — Ring Groups, Extension Shortcuts, Call Centers, Voicemails, Secure SIP with TLS, etc
- Ring Groups
- Extension Speed Dialing
- IVR (Interactive Voice Response) — useful for Business Directory Prompt
- Advanced Voicemail Services
- Securing SIP (TLS and SRTP)
- Other Cool Features
I wanted to put together a quick post on configuring the hp-snmp-agent and hp-health agents on HP Proliant servers using Linux. I stumbled across the need for this while working on a project to implement Icinga to monitor server hardware via SNMP.
First things first, check that you are running a compatbable HP Proliant G series. The current stable relase of both hp-snmp-agent and hp-helath only work with G5+. This is important to keep in mind because I ran into this issue when trying to install both agents on a G4 Proliant. The dpkg install would fail because it cannot start the hp-health agent under a G4 Proliant. I am installing the agents ontop of Debian 7.
- Let’s download the packages, check http://downloads.linux.hp.com/SDR/repo/mcp/debian/pool/non-free/ for latest versions
- You will need snmp, snmpd, and some other library files before install the packages.
apt-get install snmpd snmp lib32gcc1 libc6-i386 libsnmp30
- Now install the two(2) agents. Start with hp-health first, then install hp-snmp-agent
dpkg -i hp-health*.deb
dpkg -i hp-snmp-agents*.deb