[VoiceOps] Geographic redundancy
kenny.sallee at gmail.com
Thu Aug 13 13:12:50 EDT 2009
Sorry for double post - google shortcut and botched up keystrokes made me
All - wanted to say thanks for enlightening me. Been a very interesting
thread. Seems like there's a lot of legacy technology, regulations, and
thinking that we have to take into account in planning. The original thread
was on geographical redundancy - guess it should have been more specific:
* redundancy for an ITSP only provider that's facilities based reseller
(that being someone who is not a true CLEC but uses CLEC(s) for IP <-> TDM
conversion to get on the PSTN)
- SIP peering redundancy via IP
- local call processing and media gateway redundancy as well as
- IP reachability to CPE and CPE redundancy
* redundancy for CLEC/Carrier
- some or all of the above and
- sounds a bit more complicated when you add on SS7 requirements
- what else?
Alex - to answer you directly - ITSP with either I guess would be relevant.
Although if I use a wholesale provider I'd expect that they are both
locally and geographically redundant (or I wouldn't use them unless business
requirements or financial situation dictated outage time is OK or worth the
> On Wed, Aug 12, 2009 at 7:15 AM, Alex Balashov <abalashov at evaristesys.com>wrote:
>> Alex Balashov wrote:
>> If I remember correctly tho, in order to connect to the tandems you had
>>>> to be able to provide ss7 services. We got all of our ports out of a
>>>> DMS500, but I do remember people using something
>>>> from cisco to emulate a switch (SCC maybe?) and back end all the dial
>>>> traffic into 5800's....
>>> There were lots of switch-lite solutions (signaling gateways) that were
>>> popular during the dialup boom. The Cisco PGW was very popular among them.
>>> All of these could control media gateways via H.248/MEGACO or MGCP, and the
>>> TNTs did H.248. Just very basic SS7 ISUP->media gateway control was needed
>>> to get modem pools going.
>> And the Cisco AS-series stuff is MGCP, I believe.
>> Alex Balashov
>> Evariste Systems
>> Web : http://www.evaristesys.com/
>> Tel : (+1) (678) 954-0670
>> Direct : (+1) (678) 954-0671
>> VoiceOps mailing list
>> VoiceOps at voiceops.org
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