Hai,

Today, I have observed a network eng from a vendor
install a E&M Type II card on a Cisco 3600 and
connected to my E&M II Toshiba card.  We did a loop
test from port 1 and port 2 and it works. The Eng
configured the first port dial peer as 300..., second
port dial peer as 301.., 302.. and 303.. . So when we
did a call from our Key phone unit to another remote
site connecetd to a FSX int card we were able to get
connected using both FXS numbers was 311 and 312.

Funny thing is when the other side dial the first port
i.e 300242--> 242 is the ext. We were able to see the
call get into the router and pass through to the KST.
>From the ext 242 we can see the light showing a call
but the call was never establish. The other side
advice getting busy tone. But when we test the other
dial peer number i.e 301242, 302242 it works. And when
we need do a local loop from one key phone to another
one we must add up another number i.e 3011242, insted
off 301242.  

As I observed the sh run for both router, the config
for the dial peer was the same and the port was config
correctly (just observed since it by another vendor).
But each time the net eng configured or change any
setting he never do any shutdown and no shut.  

Thus my question is :

a) Is there any barr from using 300 flow by the wild
card ...?.

b) When I asked the eng why he keep congif a new dial
peers insted off duing any debug he reply that for
VOIP there is no debug commands. I may not be VOIP
experts but as a CCNA i did observed a few debug
commands for VOIP.  Any info on this.

c) Would the command no shut and shutdown help in this
situation.

d) What would happend to a 64Kbps line with 32 CIR
with 4 voice channels compress up to 11 KBPS?. We only
test the voice quality with extended ping as dumy
data. If the first, second and third channels is busy
the fourth persons who is using the voice channel will
have a good or bad quality off voice.  Heck after this
any problem the first people to be blame will be the
PBX guy.

Remarks:

We have test our E&M card before and we do not ned to
set any config on the card just change some jumper.  

Soon I will be installing some cisco router for my
company for VOIP and need some help on the problem.

Thanks for the help

Nuurul Basar 
Network Engineer
CCNA and MCP
Kuala Lumpur Malaysia

P/S
I am reading the Integrating Voice and Data Network by
Scot Keagy, it's a good books pity it arrived here a
bit late ( arround Nov ). Is there any more book's
like this arround.

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