[asterisk-ss7] Chan_ss7 telco interconnection requirement

[Sam Njenga]

Below are the questions. Your detailed answers will be highly appreciated.

1.       Confirm the offered system meets the guaranteed maximum value of
voice distortion and specify the offered solution's design distortion
values.



2.       Confirm the offered system has a guaranteed maximum value of
loudness and specify the offered solution's design loudness criterion.



3.       Confirm the maximum guaranteed jitter and explain how it
compensates for, or minimize jitter in their system (including the design
criteria for size of the jitter-buffers).



4.       Confirm the maximum guaranteed packet loss-rate. Confirm this rate
and the adopted strategy for compensating for, or minimising packet loss in
the system.



5.       Confirm that the system employs industry-standard or proprietary
measures for packet recovery.



6.       Confirm the offered system has a guaranteed maximum value of
system-additive noise and specify the offered solution's design level of
additive noise.



7.       Confirm the offered system has a guaranteed maximum value of
fade-distortion and specify the offered solution's design fade level.



8.       Confirm the offered system has a guaranteed maximum value of
cross-talk and  shall specify the offered solution's design cross-talk
limit.



9.       Confirm the offered solution has a guaranteed, well-defined design
voice quality score against an objective industry-standard clarity
assessment system (such as ITU-T P.561/P.562). Either intrusive or
non-intrusive measurement schemes shall be used and specify the test
strategy including the test frequency-domain span.



10.    Confirm the equipment achieves silence suppression and injects
comfort noise into the circuit, without loss of the side-tone and  specify
the offered solution's design voice-suppression depth



11.    Confirm the offered solution has a guaranteed maximum latency. The
contributions to the latency shall be disclosed.



12.    Confirm the offered solution has echo-canceller meeting or exceeding
performance in ITU-G.165/G.168, and able to support ITU-T G.168-2002. An
objective measure of PACE shall be specified.





13.    Confirm the offered system compensates for front-end clipping and
holdover suffered by a voice signal input. The implemented mitigation scheme
shall be specified.



14.    Confirm the offered solution has bandwidth gain. The techniques used
to achieve the gain and the contribution from each technique shall be
specified.



15.    Confirm the offered solution's optimal environmental condition
metrics. The optimal ambient metrics shall be disclosed (including but not
limited to optimal temperature, altitude, air pressure, humidity, noise and
shock resistance).



16.    Confirm the offered system's electromagnetic power immunity from and
emission into the environment and  shall clearly state the compatibility
certification for the proposed system.


























On 11/22/06, Anton <anton.vazir at gmail.com> wrote:
>
> Can you post that questions here?
>
> On 22 November 2006 19:04, Sam Njenga wrote:
> > Hi
> > I am interconnecting to a telco provider using chan_ss7.
> > I have opted to use asterisk for this. I am quite
> > conversant with asterisk configuration and little
> > knowledge about ss7. I have done back-2back tests between
> > two asterisk boxes and calls pass perfectly.
> > The local telco has requested me to fill a technical
> > interconnection questionare about my system. Some of the
> > questions require detailed explanations.
> >
> > Can someone with SS7 knowledge assist me on this ?
> >
> > Sam
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-- 
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Sam Njenga
Edgenet Ltd
Post Bank House
Banda Street Nairobi
Kenya
Tel: +254 20 242019/23
Cell: 0722 570985
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