Download Field Problems Reported at Workshop on C

Name of the Site/Circle : Tamil Nadu
S.No.
Problem Detail
Solution/Comments
1.
In a multi module type CDOT switch during A/T of line-to-line call
between two RSUs one sub in on RSU to sub in the other RSU it
was observed that there was no speech condition in a cyclic fashion
(perhaps every 28). It was solved in the subsequent patch by
blocking some specific time slots for voice calls. Whether in the
new version the above time slot is made available for all type of
calls
The problem was solved from s/w 4.26 own ward and now all the
slots are available for speech.
2.
The switch should be designed in such a way that there should not
be any limitation for equipping RSU BM. (i.e.) to say that in a
multi Module-XL type switch all the 32 BMs can be configured as
remote BMs.
This requirement has been taken care in new H/W design of VECM & BM.
3.
In the present x-code modification utility there are some problems.
To quote a few that if there is any hot line equipped in a particular
BM that level cannot be modified. Those numbers under frozen
status the meter reading becomes zero after modification of the
X-code.
−
Caution regarding withdrawal of Hot line/call diversion
facility has been mentioned in X-code Modification procedure
−
Meter reading problem of frozen Nos. will be taken care in
subsequent S/W Release.
4.
Utility should be developed to sort numbers according to
subscribers priority, and for changing the BM number. This is a
field requirement to release the co-located even BMs for creating
new remote BMs.
Requirement is under consideration.
5.
Among the switches working in the Indian net work it is seen that
the C-DOT type of switches are the most affected one against
lightning, even after taking all known precautionary steps to avoid
such heavy discharge that may occur during the period of
lightning
Secondary protection has been provided in the newly designed
LCC Card of 16 port. This card will be available with new H/W of
VE-BM/CM.
6.
A fool proof tool for testing of the switch for its BHCA capacity
should be made available as part of the software, as unavailability
of sufficient number of LTG and its reliability because of its wear
and tear poses problems to the installer. The present restriction of
changing the system parameter SPL-RNG during the testing in a
working exchange does not seem to be a workable one. In addition
the tool should be similar to the one that of the present LTG (such
as with the option of number of calls to be generated, specifying
CTS-B tool is the only solution available at present.
-5-