CME Supervisory Disconnect

Unanswered Question
Apr 27th, 2007

Team --

I just installed CME 4.0 and we are experiencing some issues. They have a Integrated T1 with 6 channels of voice. The voice channels are set up with fxo-loop-start. The problem occurs when an outside caller hangs up the phone. The Telco says that the cut off on disconnect is on the line and working. However, then the CME receives the disconnect, the end point will receive dialtone, as if the line is now seized by the phone.

This the is config.

controller T1 0/0/0

framing esf

linecode b8zs

channel-group 1 timeslots 13-24

ds0-group 0 timeslots 1-5 type fxo-loop-start

ds0-group 2 timeslots 6 type fxo-loop-start

!

!

!

!

!

!

!

interface FastEthernet0/1

description Uplink to Voice VLAN on switch

ip address 192.168.18.20 255.255.255.0

duplex auto

speed auto

!

interface Service-Engine1/0

ip unnumbered FastEthernet0/1

service-module ip address 192.168.18.21 255.255.255.0

service-module ip default-gateway 192.168.18.20

!

ip route 192.168.1.0 255.255.255.0 192.168.18.253

ip route 192.168.18.21 255.255.255.255 Service-Engine1/0

!

!

ip http server

no ip http secure-server

!

!

!

!

!

!

tftp-server flash:term41.default.loads

tftp-server flash:term61.default.loads

tftp-server flash:music-on-hold.au

tftp-server flash:SCCP41.8-2-2SR1S.loads

tftp-server flash:apps41.8-2-2ES1.sbn

tftp-server flash:cnu41.8-2-2ES1.sbn

tftp-server flash:dsp41.8-2-2ES1.sbn

tftp-server flash:jar41sccp.8-2-2ES1.sbn

tftp-server flash:cvm41sccp.8-2-2ES1.sbn

tftp-server flash:/Desktops/320x212x12/logo.png

tftp-server flash:/Desktops/320x212x12/logo-small.png

tftp-server flash:/Desktops/320x212x12/List.xml

tftp-server flash:/Desktops/320x196x4/logo.png

tftp-server flash:/Desktops/320x196x4/logo-small.png

tftp-server flash:/Desktops/320x196x4/List.xml

tftp-server flash:Desktops/320x196x4/logo.png

tftp-server flash:Desktops/320x196x4/logo-small.png

tftp-server flash:Desktops/320x196x4/List.xml

tftp-server flash:S00105000200.sbn

!

control-plane

!

!

!

voice-port 0/0/0:0

output attenuation 0

connection plar 611

caller-id enable type 1

!

voice-port 0/0/0:2

output attenuation 0

connection plar 7516

caller-id enable type 1

!

!

!

!

!

dial-peer voice 1 voip

destination-pattern 6..

session protocol sipv2

session target ipv4:192.168.18.21

dtmf-relay h245-alphanumeric

codec g711ulaw

no vad

!

dial-peer voice 2 pots

incoming called-number .

port 0/0/0:0

forward-digits all

!

dial-peer voice 407 pots

destination-pattern 9407.......

port 0/0/0:0

forward-digits 10

!

dial-peer voice 321 pots

destination-pattern 9321.......

port 0/0/0:0

forward-digits 10

!

dial-peer voice 100 pots

destination-pattern 91..........

port 0/0/0:0

forward-digits 11

!

dial-peer voice 911 pots

destination-pattern 911

port 0/0/0:0

forward-digits 3

!

dial-peer voice 9911 pots

destination-pattern 9.11

port 0/0/0:0

forward-digits 3

!

dial-peer voice 3 pots

incoming called-number 7516

port 0/0/0:2

!

!

sip-ua

mwi-server ipv4:192.168.18.21 expires 3600 port 5060 transport udp unsolicited

!

Let me if you have enough information or need me to clarify.

Thank you for help you can provide.

Ohamien

I have this problem too.
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Paolo Bevilacqua Sat, 04/28/2007 - 00:53

Hi,

you say "the endpoint receives dialtone" - I assume this means, the IP Phone receives dialtone when the remote hangs-up, and with this dialtone is even possible to dial a new number - correct ?

If so I would certainly invite telco on premises and have a look - telcos are universally know to deny problems until they are faced to them.

Anyway, I have seen some switches (can't remember when and where) doing this - giving dialtone instead of disconnect, espcially when the first part to hang-up was the person that originated the call.

Suggestion -switch to ISDN if possible -PRI or BRI - End of any issue, forever.

ouhakheme Sat, 04/28/2007 - 04:45

They have ordered a PRI, it will arrive in about 3 weeks. I was just making sure that this was not my problem with the configuration, or CME 4.0.

The telco will always be in disbelief, on premise or not. I think the problem stems from connecting to a DMS1000 at the CO.

Thanks for the insight though, I will just tell the customer to hang up the phone.

Paolo Bevilacqua Sat, 04/28/2007 - 05:45

Good observations. I think the sentence "to be on denial" started from some telco.

There are exceptions anyway, a little anecdote that I want to tell here. Some years ago, I noticed I had voice cuts at home, so called telco (just not to make names, it was pacbell) and complained. They said all was fine and after I insisted, some day later a kind young lady calls me back saying that they ran checks on the line and I should check my phones. In deep disbelief I proceeded to do so and found a cheap phoneset that I was very fond of, was the culprit.

But it was an exception!!

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