Posted: Sun May 17, 2009 9:05 pm Post subject: [asterisk-biz] Number of hops- Termination
Just curious, if it is possible to find/figure out number of (server) hops for any termination provider. Are there 'tools' for asterisk to get this information? It would be nice to see the hops and the associated IPs.
Experts, any idea?
Posted: Sun May 17, 2009 9:10 pm Post subject: [asterisk-biz] Number of hops- Termination
Sandeep Kanao wrote:
Quote:
Just curious, if it is possible to find/figure out number of (server) hops
for any termination provider. Are there 'tools' for asterisk to get this
information? It would be nice to see the hops and the associated IPs.
Experts, any idea?
Posted: Mon May 18, 2009 5:05 am Post subject: [asterisk-biz] Number of hops- Termination
Alistair Cunningham wrote:
Quote:
Sandeep Kanao wrote:
> Just curious, if it is possible to find/figure out number of (server) hops
> for any termination provider. Are there 'tools' for asterisk to get this
> information? It would be nice to see the hops and the associated IPs.
> Experts, any idea?
I believe he's referring to the number of carriers a call needs to
traverse, till it reaches its final destination - not the actual IP hop
count from his gateway to the termination side - that is easy.
I don't believe such a tool exists, nor do I believe that such a tool
can be built.
--
Kind Regards,
Nir Simionovich
Asterisk Community Founder and Maintainer - Israel
Posted: Mon May 18, 2009 5:25 am Post subject: [asterisk-biz] Number of hops- Termination
From an engineering perspective, the number of political and
administrative entities intervening in the call path isn't nearly as
interesting as the network topology.
However, a traceroute - that is, an illumination of Layer 3 hops, and
indeed, furthermore, merely of those which permit ICMP
TTL-exceeded-in-transit messages to originate from or pass through them
- is unlikely to be of any utility whatsoever. The interesting facts
about the quality of an ITSP doing termination relate to their physical
location, peering relationship to various Tier 1 backbones, the
bandwidth they have to them, and the gear involved. And all that is
only relevant if they themselves do SIP access with their underlying
carriers. Otherwise, there may be a wealth of TDM network elements
involved, and in either scenario, plenty of <= Layer 2 elements that
also have an effect on the conceptual ultimacy that is the "path" or the
"hops" involved.
What happens to the call beyond the ITSP's handoff to the underlying
carrier is also of interest, as the topologies of the physical
interconnected TDM networks that may be used to reach the PSTN are as
innumerable as the mind can allow. What happens to the call once it
goes beyond an incumbent POI (point of interconnect) and to a tandem is
also germane to the overall question of "hops."
In short, Sandeep, either you need to focus your question more to give
it more conceptual integrity, else what you appear to be asking for is
impossible.
Nir Simionovich wrote:
Quote:
Alistair Cunningham wrote:
> Sandeep Kanao wrote:
>> Just curious, if it is possible to find/figure out number of (server) hops
>> for any termination provider. Are there 'tools' for asterisk to get this
>> information? It would be nice to see the hops and the associated IPs.
>> Experts, any idea?
> Try "man traceroute" on your Asterisk machine.
>
> Alistair Cunningham
> +1 888 468 3111
> +44 20 799 39 799
> http://integrics.com/
>
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> asterisk-biz mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-biz
Alistair,
I believe he's referring to the number of carriers a call needs to
traverse, till it reaches its final destination - not the actual IP hop
count from his gateway to the termination side - that is easy.
I don't believe such a tool exists, nor do I believe that such a tool
can be built.
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (678) 237-1775
_______________________________________________
--Bandwidth and Colocation Provided by http://www.api-digital.com--
Posted: Mon May 18, 2009 8:05 am Post subject: [asterisk-biz] Number of hops- Termination
Nir Simionovich wrote:
Quote:
Alistair Cunningham wrote:
> Sandeep Kanao wrote:
>> Just curious, if it is possible to find/figure out number of (server) hops
>> for any termination provider. Are there 'tools' for asterisk to get this
>> information? It would be nice to see the hops and the associated IPs.
>> Experts, any idea?
> Try "man traceroute" on your Asterisk machine.
>
> Alistair Cunningham
> +1 888 468 3111
> +44 20 799 39 799
> http://integrics.com/
>
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> asterisk-biz mailing list
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-biz
Alistair,
I believe he's referring to the number of carriers a call needs to
traverse, till it reaches its final destination - not the actual IP hop
count from his gateway to the termination side - that is easy.
I don't believe such a tool exists, nor do I believe that such a tool
can be built.
Nir,
You could be right; the original question could be interpreted either
way. Sandeep, care to elaborate?
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