Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations SkipVought on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Analogue calls cut-off by incoming fax call.

Status
Not open for further replies.
RichardFagan

RichardFagan

Vendor
Aug 21, 2008
5
0
0
GB
Bit of a strange one to get you all thinking. CS1K,Rls 5.0.CallPilot,CC7.
An established call on an analogue phone gets cut-off by an incoming call to a fax machine in the same room. However one side of the established call gets connected to the fax call i.e. fax tone. Analogue ports are on different FALC's on different loops, local wiring is not on adjacent pairs etc.
Also, internal modems are always not auto-answering - maybe related??
Anyone recognise this as fixed by a patch at all? ISSP shows switch last patched March 2009 but being a hospital it's difficult getting downtime for updates.
Told you it was weird.
 
Sort by date Sort by votes
still sounds like a layer one.. tip to tip cross.. i would change pairs in the tie cable.. maybe test it with the jumpers lifted..

if that was a reocuring problem in rls 5 i would have seen it here.. another hosp with maybe 200 fax machines or more.

john poole
bellsouth business
columbia,sc
 
Upvote 0 Downvote
That was my 1st thought too. Same on a different pair, and it's also across different fax's in 3 different areas.I'm thinking it's the fax machines right now but...
 
Upvote 0 Downvote
From the description I am saying physical wiring has an issue somewhere. Sounds like a split tip and ring.
 
Upvote 0 Downvote
Pull the cross connects in the switchroom. Connect a phone to each TN. Simulate the users situation. Does it happen there? If not, you have a wiring issue. Start searching for the crossed pairs. If it does, you have a switch problem. Call you local maintenance vendor. Good luck.

DocVic
Dedicated to Nortel Products till the end.
Need help?
 
Upvote 0 Downvote
Definately not wiring. To make it easier it's not all the time so can't reproduce it.A wiring fault would be all the time and reproduceable under that same conditions. Seems that it started happening about when CC7 Express got added.Still reckon it's patch related. Will let you guys know.
 
Upvote 0 Downvote
CC7 shouldn't play a role at all, are these calls coming in a certain way? Are they going through a call tree first?
 
Upvote 0 Downvote
When did the problem start?
If it's new, something must have changed.
Is this possibly a trunk side issue?
You don't use 66 blocks do you? I once had to fly out to CA for a serious "switch problem" Turned out the 66 blocks were not split blocks....
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

bltodd
  • Locked
  • Question
ERR008 Digital and Analog Calls in Hang up after initial connection. Calls to outside hangup Fax too
Replies
0
Views
57
bltodd
bltodd
phonetech2012
  • Locked
  • Question
no incoming calls to DID's that start with a "1" 1
2
Replies
20
Views
174
Michael OConnor
Michael OConnor
phonetech2012
  • Locked
  • Question
xeta call acounting
Replies
0
Views
52
phonetech2012
phonetech2012
JValles
  • Locked
  • Question
Analogue ports/Digital Ports
Replies
2
Views
66
JValles
JValles
krtcomm1
  • Locked
  • Question
CLID on tandem calls outbound to PSTN when calls are forwarded externally
Replies
6
Views
93
krtcomm1
krtcomm1

Part and Inventory Search

Sponsor

Back
Top