- Table of contents
- Colocated Hub
This page exists to collect some planning about the future colocated OCTOI hub, see #5542
Server (specs)¶High level:
- Some 2U machine with capacity to host preferably >=2 full-height PCIe cards (TE820).
- SRV-IO to map TE820 into a VM for easier debugging of potential DAHDI kernel crashes
- amount of RAM is not very important, the use case has no high RAM requirements
- CPU is more critical given all of the the byte-shifting and lots of copying / context switches we have to do for each trunk in the current software architecture
- storage is also not very critical, other than for log files / monitoring
- laforge has experience with Dell PowerEdge R740 (up to 3 full-height slots)
- gruetzkopf has suggested HP DL830p G8 (up to 6 full-height slots)
- laforge is checking SuperMicro options with riser cards for PCIe
laforge has at least two TE820 that can be used for this purpose
We need at leaset one icE1usb as a GPS-disciplined clock master.
We can also use that one to compare physical (icE1usb+TE820) setups against DAHDI-trunkdev.
We could deploy 1-2 more, just in case.
RAS / dial-up server¶
We should install at least one RAS server next to it, for dial-up modem / isdn termination
- Definitely the Livingston Pormaster3 currently next to the hub. Needs 1xE1 on the Server
- Likely also a Cisco ASR5400 laforge has acquired (much higher capacity, likely more featurs)
- Like in the current hub at @laforge's basement, we should run the entire yate / osmo-e1d / dahdi-trunkdev inside a KVM with SRV-IO mapping the PCI devices
Misc / TODO¶
local verification with modem/ISDN-TA¶
It would be great if we could somehow verify local calls via the yate / hub excluding the complexity of the TDMoIP to compare calls without TDMoIP to calls with TDMoIP.
Unfortuantely I'm not aware of any really small PBX that would terminate the E1/S2M and offer S0/POTS ports. Adding antoher 3U for a PBX seems excessive.
Doing calls between PM3 and ASR5400 is of course an option, but ideally we'd have a real physical modem attached via a serial port, and a real HFC-S-USB for test purpose.