[cisco-voip] MGCP Drop calls after 3 minutes

[Marcelo Zilio (AM)]

Hi,

After upgrade CUCM from 6.1 to 7.1.5 our MGCP gateway (GW IOS is 12.4(15)T8) is showing a strange behavior: outbound calls are successfully established however after 3 minutes they are dropped by the CUCM. There are no inbound calls, just outbound.
Show call active voice shows the callmanager/Ip phone leg as 'connecting' instead of active. I can hear conversation in both sides.

7FC  : 1561750 13922624090ms.1 +0 pid:0 Originate  connecting
 dur 00:01:06 tx:3327/532320 rx:3325/532000
 IP x.x.x.x:17970 SRTP: off rtt:0ms pl:60450/0ms lost:0/0/0 delay:55/55/65ms g711ulaw TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a
7FC  : 1561749 13922624090ms.2 +10 pid:0 Originate  active
 dur 00:01:06 tx:3326/558768 rx:3330/532642
 Tele 0/1/1:15 (1561749) [0/1/1.24] tx:66570/66570/0ms g711ulaw noise:-77 acom:6  i/0:-79/-79 dBm

debug isdn q931 shows after 3 minutes of conversation:
022560: Mar 19 10:13:17.837 UTC-3: ISDN Se0/1/1:15 Q931: TX -> DISCONNECT pd = 8  callref = 0x0225
        Cause i = 0x8092 - No user responding

If I change T301 on service parameters to say 360 seconds, then the call remains active 6 minutes and it's dropped as well.
It seems CUCM didn't understand that the call is active.

TAC just say to reboot the cluster. I didn't do yet because I think is something missing...
Do I have to enable/disable anything else in this CUCM version?



Marcelo Zilio
Support Services, Brasil
Dimension Data

Av. Silva Jardim 2042 | 6o. Andar
Curitiba | 80250-200
Telefone: +55 41 3906 2500
Fax: +55 41 3016 2306
Celular: +55 41 9115 7413
www.dimensiondata.com.br<http://www.dimensiondata.com.br/>
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