Difference between revisions of "Guerilla VoIP"

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* PoE hack adapter connected pin 1 (white-orange) and pin 3 (white-green) with 22K resistor.
 
* PoE hack adapter connected pin 1 (white-orange) and pin 3 (white-green) with 22K resistor.
 
** if the pre-standard CP-79x0 is connected, it doesn't power, when you unplug it, it will enable power within 5 seconds; plug in, and the phone boots.
 
** if the pre-standard CP-79x0 is connected, it doesn't power, when you unplug it, it will enable power within 5 seconds; plug in, and the phone boots.
* complete set on a lab power supply: PoE switch, one phone on a hacky cable, router two RasPis and my cell phone charging:
+
* complete set on a lab power supply: PoE switch, one phone on a [[Telephone_system:Cisco PoE hack|hacky cable]], router two RasPis and my cell phone charging:
 
** uses about 2A@12V and 1.6@13.8V
 
** uses about 2A@12V and 1.6@13.8V
 
[[image:guerilla_prototype.jpg|right|400px|Complete Guerilla VoIP prototype running at 13.8V]]
 
[[image:guerilla_prototype.jpg|right|400px|Complete Guerilla VoIP prototype running at 13.8V]]
  
Still to test/measure/fix:
+
=== done ===
* battery, initially 7Ah (ordered)
+
* wired the stuff (except for the battery)
* whole set with battery and battery charger
+
* [[Telephone system:Cisco PoE hack]] cable
* whether network on the PoE hacked connector works reliably
+
* Cisco NL dialplan
 +
 
 +
=== todo ===
 +
* test with working battery, initially 7Ah (ordered)
 +
* test whole set with battery and battery charger
 +
* add trunks
 +
* write internal dialplan
 +
* add fifo queue with welcome message
  
 
[[Category:Telephony]]
 
[[Category:Telephony]]

Revision as of 20:50, 8 July 2013

Project: Guerilla VoIP
Featured:
State Active
Members xopr
GitHub No GitHub project defined. Add your project here.
Description low cost communication node
Picture
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synopsis

Create a low cost communication node (with VoIP as a base), trying to connect as many as possible types of links, for example:

  • copper/fibre/WiFi network
  • DECT/POTS telephony
  • SIP/SCCP
  • HAM radio (or preferrably, CB radio: 27MC/PMR)
  • copper/WiFi/USB uplink


It also could need some of the following functionality:

  • PoE service (to drive phones, remote switches/accesspoints)
  • battery supported/powered (in case of power failures/lack of power)
  • Efficient power converter(s) when running on battery
  • sturdy compact waterproof casing


So to make the first prototype, I chose the following:

  • ammo box
  • 7Ah battery
  • step-down converter 12->5V
  • step-up converter 12v->48V
  • Fritz!Box 7270 (NAT, FxS, FxO, DECT)
  • Raspberry Pi running FreeSWITCH and DHCP
  • Raspberry Pi running FreeSWITCH and TFTP
  • Netgear GS110TP (8xPoE + 2xSFP)

prototyping

Cisco CP7940 running on a drill battery pack, shows 0.36A at approximately 12V

Tested the following items:

  • Two Raspberry Pis on a drill battery pack (step-down)
    • uses 0.33A at approximately 12V
  • Cisco CP7940 on a drill battery pack (step-up)
    • uses something between 0.36A and 0.45A at approximately 12V
  • Fritz!box has a switching regulator to 5V tested between 5.5V and 15V (drops off at 5.3V idle and elca at power supply segment is rated 16V)
    • without WiFi, it peaks at 0.44A (12V), and idles at about 0.34A-0.38, which the webservice is saying 41%-43%, which means it would top at about 0.88A.
    • With 15V power it idles at about 0.25A
  • Netgear GS110TP PoE switch on a lab power supply (step-up)
    • uses approximately 0.33A at 12V
  • PoE switch with one phone powered (step-up)
    • uses approximately 0.74A at 12V
  • PoE hack adapter connected pin 1 (white-orange) and pin 3 (white-green) with 22K resistor.
    • if the pre-standard CP-79x0 is connected, it doesn't power, when you unplug it, it will enable power within 5 seconds; plug in, and the phone boots.
  • complete set on a lab power supply: PoE switch, one phone on a hacky cable, router two RasPis and my cell phone charging:
    • uses about 2A@12V and 1.6@13.8V
Complete Guerilla VoIP prototype running at 13.8V

done

todo

  • test with working battery, initially 7Ah (ordered)
  • test whole set with battery and battery charger
  • add trunks
  • write internal dialplan
  • add fifo queue with welcome message