Hai,
I was in an interview when the manager asked we about this problem related
to VOIP.
(A) VOIP
(B)
Phone (+) PABX (+) Router <------------------------------------------->
Router (+) PABX (+) Phone System
System FR 128kb
(+)
PSTN
(+)
Phone System (Copper)
(C)
Situation :
a) User from Phone System (A) connected to the Office PABX then connected
to the router plus NT using Frame Relay connection to user Phone System (B).
During the test call, the user A can hear echo from Phone B. where shall
you start to check on the problem?.
b) The second problem is from A --> B no echo but to C there is echo. When
test from B--> C there is no echo, just from A--> C the echo come. What may
be the problem?.
For problem a) with the given assumption with out the PABX nor the router
model but assuming it have a VOPI card install, I suggest the the problem
may relay on the Frame Relay line and the router it self. I believed debug
command will help here, but on the PABX site is there any one can give a
suggestion on it?. I
For problem b) I believed the problem lies between the B--> C since C is
using Analogue going into the Pabx, converted to Digital and then been
tunnel into the router(B) then decompress in router(A) thus the end user got
the echo problem. Will the be the case when we used the PABX to call a
local call from A through B pabx and then goes to the normal PSTN line. Or
it may due to my country PSTN condition?. Is there any command that we can
do on the either router to check why the echo is there.
any help on implementing VOIP, connecting router to PABX would be much
helpful.
Thanks
Have a nice day
Nuurul Basar Bin Mohd Baki
Customer Service Executive IT Help Desk
Shell Services International Sdn Bhd (432283-T)
MCP
CCNA
Tel : 603-20803214
Fax : 6032512957
Email : [EMAIL PROTECTED]
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
