Delayed dialtone on analog stations CM 8.1 and MM711 G350 1

[mdxm]

I am having some trouble with an intermittent delayed dialtone on analog stations. I can usually figure out these types of issues, but I have gotten stuck. Any help or ideas is greatly appreciated.

[ul]
[li]Software Version: R018x.01.0.890[/li]
[li]Two different G350 gateways (both FW Version/HW Vintage: 30.27.1 /1)[/li]
[li]Two different MM711 modules (both HW Vintage: 33 - FW Vintage: 104)[/li]
[li]G350 Analog (on-board) ports (HW Vintage 0 - FW Vintage 73)[/li]
[/ul]

Intermittently, when going off hook on an analog station dial tone is not heard for some time. I can hear several "CPC" (open loop disconnect or voltage drop) sounds in between a few seconds before finally getting dialtone and being able to place a call. This seems to occur the first time you go off hook after being on-hook for some time and then will reoccur after several times of going off and on hook. There is no issue receiving calls. The station always rings and there is no delay when answering. I've tried multiple analog phones. The CM and gateway are on the same LAN with no network trouble between the two. There are no issues with DCP phones.

A 'list trace station' shows denial event 1644 when this occurs. In the below example, the trace was started at 09:53:20. The analog station went off hook at 09:53:22 and the denial event 1644 was displayed. Dialtone was not heard until the 'active station' event at 09:53:32. The station went on-hook at 09:53:41.

LIST TRACE

time            data

09:53:20 TRACE STARTED 01/07/2020 CM Release String R018x.01.0.890.0
09:53:22   denial event 1644: Orig block/invalid digits D1=0x959 D2=0x800040f
09:53:22     active station      2656 cid 0x40f
09:53:32     active station      2656 cid 0x410
09:53:41     idle station      2656 cid 0x410

At first I thought I had a faulty G350 gateway as this was happening with two different MM711 modules and the analog ports built in to the G350. I swapped out the G350 and the issue persisted. I registered the G350 to another old CM (2.1) and the analog ports work fine. I think I have narrowed this down to either a translation issue or bug in CM 8.1.

I am a novice with these systems and might be missing something simple. Below is the configuration I think might be relevant relevant. I am looking for any ideas to try. Can anyone think of what I should try next?

G350-001(super)# show running-config
G350-001(super)#
! version 30.27.1
Config info release 30.27.1 time "10:20:51 07 JAN 2020 " serial_number 03IS07580
 !
encrypted-username ********* password ***********
set logging file enable
set logging file condition all Error
set logging file condition BOOT Debug
!
no snmp-server community
set spantree disable
set port negotiation 10/3 disable
set port name 10/3 "Uplink"
!
ds-mode t1
!
interface Vlan 1
 icc-vlan
 ip address x.x.x.x       255.255.255.0 
 pmi
 exit

!
interface FastEthernet 10/2
 exit
!
interface Console
 ip address x.x.x.x        255.255.255.0 
 exit
!
interface USB-Modem
 timeout absolute 10
 shutdown
 ip address x.x.x.x        255.255.255.0 
 exit
!
set mgc list x.x.x.x
set mediaserver x.x.x.x x.x.x.x 23 telnet
set mediaserver x.x.x.x x.x.x.x 5023 sat
set icc-monitoring enable
rtp-stat qos-trap
no rtp-stat fault
analog-test
exit
!#

G350-001(super)# show faults

CURRENTLY ACTIVE FAULTS
--------------------------------------------------------------------------

-- MGP Faults --
    + Expected ICC not present, 01/01-00:00:24.00

Current Alarm Indications, ALM LED is off
--------------------------------------------------------------------------
None

Done!

G350-001(super)# show voltages
Voltage   Actual  Status  Usage
-------   ------  ------  -----
 -49.0   -50.000  OK      PoE ports
 -48.0   -48.303  OK      5V DC2DC, Analog/DCP ports, Fans
   5.0     4.993  OK      3.3V DC2DC,1.8V DC-to-DC,Modules logic,
                          TDM buses TSI
   3.3     3.277  OK      2.5V voltage regulator, Motherboard logic
   2.5     2.552  OK      CPU & companion chip I/O
   1.8     1.794  OK      1.6V voltage regulator,
                          CPU & companion chip core
   1.6     1.576  OK      VoIP DSP

G350-001(super)# show module
SLOT   TYPE         CODE        SUFFIX  HW VINTAGE  FW VINTAGE
----   --------     ----------  ------  ----------  -----------
v0     G350                     A       1           30.27.1(A)
v1     -- Not Installed --
v2     -- Not Installed --
v3     DCP          MM712       A       7           8
v4     Analog       MM711       A       33          104
v5     Analog       MM711       A       33          104
v6     PoE          MM314       C       0           N/A
v7     Analog       (on-board)  A       0           73

G350-001(super)# show mgc

CALL CONTROLLER STATUS
-------------------------------------------
Registered            : YES
Active Controller     : x.x.x.x
Controller SW Version : R018x.01.0.890.0
H248 Link Status      : UP
H248 Link Error Code  : 0x0

CONFIGURED MGC HOST        
---------------------      
x.x.x.x                      
-- Not Available --              
-- Not Available --              
-- Not Available --              

Done!

MEDIA GATEWAY 1          Page 1 of 2

                    Type: g350   
                    Name: G350               
               Serial No: 03ISXXXXXXXX
    Link Encryption Type: any-ptls/tls
          Network Region: 1                   Location: 1 
                                             Site Data:
           Recovery Rule: none

              Registered?  y
   FW Version/HW Vintage: 30 .27 .1  /1 
        MGP IPV4 Address: x.x.x.x     
        MGP IPV6 Address:
   Controller IP Address: x.x.x.x                              
             MAC Address: 00:04:0d:xx:xx:xx

   Mutual Authentication? optional

MEDIA GATEWAY 1              Page 2 of 2

                                 Type: g350   

Slot   Module Type            Name
 V1:  
 V2:  
 V3:   MM712                  DCP MM      
 V4:   MM711                  ANA MM      
 V5:   MM711                  ANA MM      
 V6:   MM314                  ETH 24P MM  
 V7:   1T+2L-Integ-Analog     ANA IMM     
 V8:   messaging-analog       MSG VMM               Max Survivable IP Ext: 8 
 V9:   gateway-announcements  ANN VMM

IP MEDIA PARAMETERS            Page 2 of 2

                              Allow Direct-IP Multimedia? n



                                             Redun-                     Packet
                          Mode               dancy                      Size(ms)
    FAX                   pass-through       0
    Modem                 pass-through       0
    TDD/TTY               pass-through       0
    H.323 Clear-channel   n                  0
    SIP 64K Data          n                  0                          20


Media Connection IP Address Type Preferences
 1: IPv4
 2:

FEATURE-RELATED SYSTEM PARAMETERS            Page 6 of 19
         Public Network Trunks on Conference Call: 5              Auto Start? n
    Conference Parties with Public Network Trunks: 6               Auto Hold? n
 Conference Parties without Public Network Trunks: 6          Attendant Tone? y
         Night Service Disconnect Timer (seconds): 180         Bridging Tone? n
                 Short Interdigit Timer (seconds): 3         Conference Tone? n
              Unanswered DID Call Timer (seconds):            Intrusion Tone? n
              Line Intercept Tone Timer (seconds): 0   ***Tried changing to 0 from 30***  Mode Code Interface? n
                 Long Hold Recall Timer (seconds): 0 
                      Reset Shift Timer (seconds): 0 
     Station Call Transfer Recall Timer (seconds): 0         Recall from VDN? n
           Trunk Alerting Tone Interval (seconds): 15
                               DID Busy Treatment: tone    
               Allow AAR/ARS Access from DID/DIOD? n
                 Allow ANI Restriction on AAR/ARS? n
Use Trunk COR for Outgoing Trunk Disconnect/Alert? n
                  7405ND Numeric Terminal Display? n                  7434ND? n



    DTMF Tone Feedback Signal to VRU - Connection:          Disconnection:

CLASS OF SERVICE         COS Group: 1   COS Name:

                                0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 Auto Callback                  n  y  y  n  y  n  y  n  y  n  y  n  y  n  y  n
 Call Fwd-All Calls             n  y  n  y  y  n  n  y  y  n  n  y  y  n  n  y
 Data Privacy                   n  y  n  n  n  y  y  y  y  n  n  n  n  y  y  y
 Priority Calling               n  y  n  n  n  n  n  n  n  y  y  y  y  y  y  y
 Console Permissions            n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Off-hook Alert                 y  y  y  y  y  y  y  y  y  y  y  y  y  y  y  y
 Client Room                    n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Restrict Call Fwd-Off Net      y  y  y  y  y  y  y  y  y  y  y  y  y  y  y  y
 Call Forwarding Busy/DA        n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Personal Station Access (PSA)  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Extended Forwarding All        n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Extended Forwarding B/DA       n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Trk-to-Trk Transfer Override   n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 QSIG Call Offer Originations   n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n
 Contact Closure Activation     n  n  n  n  n  n  n  n  n  n  n  n  n  n  n  n

 

[kyle555]

can you prove it with a butt set?

 

[Sean655]

Have you tried creating a new extension (not duplicated)? Seems odd that the denial event is for invalid digits. There isn't a hotline setup on the station either?

 

[mdxm]

Thanks for the ideas.

I should have mentioned that this does occur with a butt set connected with a short wire to the MM711/built in ports and it does occur after creating new stations at different ports. I also thought that maybe a rotary digit was being detected so I tried turning on the "Ignore Rotary Digits" option.

There is nothing filled in for hotline designation. The denial event is odd. And it occurs immediately after going off hook, not after a timer expires. The issue is intermittent in the since that if I continually go on an off hook, it will only happen some times, but if I leave the station on hook for some amount of time, it always happens the first time I go off hook.

Here is the output from 'change station'

change station 2656                                             Page   1 of   4 
                                     STATION                                    

Extension: 2656                          Lock Messages? n               BCC: 0
     Type: 2500                          Security Code:                  TN: 1  
     Port: 001V508                     Coverage Path 1:                COR: 1   
     Name: Test Analog                 Coverage Path 2:                 COS: 1 
Unicode Name? n                     Hunt-to Station:                  Tests? y
STATION OPTIONS
      XOIP Endpoint type: auto             Time of Day Lock Table:  
              Loss Group: 1             Message Waiting Indicator: none
    Off Premises Station? n



          Survivable COR: internal    
   Survivable Trunk Dest? y
                                              Remote Office Phone? n
change station 2656                                             Page   2 of   4 
                                     STATION
FEATURE OPTIONS
           LWC Reception: spe  
          LWC Activation? y                         Coverage Msg Retrieval? y
  LWC Log External Calls? n                                    Auto Answer: none
             CDR Privacy? n                               Data Restriction? n
   Redirect Notification? y                        Call Waiting Indication: y
 Per Button Ring Control? n                   Att. Call Waiting Indication: y
   Bridged Call Alerting? n                      Distinctive Audible Alert? y
        Switchhook Flash? y                            Adjunct Supervision? y
    Ignore Rotary Digits? n
        H.320 Conversion? n          Per Station CPN - Send Calling Number?  
       Service Link Mode: as-needed
         Multimedia Mode: basic                    Audible Message Waiting? n
    MWI Served User Type:            
              AUDIX Name:        
                                                 Coverage After Forwarding? s
                                                   Multimedia Early Answer? n
                                               Direct IP-IP Audio Connections? y
 Emergency Location Ext: 2656                            IP Audio Hairpinning? n

change station 2656                                             Page   3 of   4 
                                     STATION


   Bridged Appearance Origination Restriction? n







                              ENHANCED CALL FORWARDING
                                       Forwarded Destination         Active
 Unconditional For Internal Calls To:                                   n
                   External Calls To:                                   n
          Busy For Internal Calls To:                                   n
                   External Calls To:                                   n
      No Reply For Internal Calls To:                                   n
                   External Calls To:                                   n

            SAC/CF Override: n
                                                                                
change station 2656                                             Page   4 of   4 
                                     STATION
 SITE DATA
       Room:                                            Headset? n
       Jack:                                            Speaker? n
      Cable:                                           Mounting: d
      Floor:                                        Cord Length: 0 
   Building:                                          Set Color:       




ABBREVIATED DIALING
     List1:                    List2:                    List3:         

HOT LINE DESTINATION
         Abbreviated Dialing List Number (From above 1, 2 or 3):  
                                                      Dial Code:     

     Line Appearance: call-appr

 

[mdxm]

I just tried adding a hotline and I still get the 1644 denial event immediately after going off hook, but now if I stay off hook I never get dialtone (as expected) and the hotline call never completes. If I go on and off hook again the hotline call will complete and if I keep doing it, I will intermittently get the denial event again with indefinite dead air until I hang up.

I really hope this is some setting I can find or at least something I can correct.

 

[kyle555]

The only thing that jumps out in my mind is once upon a time we changed some phones out instead of mucking with timers. The phones going off hook would do like a hookswitch flash.

Maybe if the port is perceiving it as the hookswitch tapping a bit, it might interpret it as a rotary dialed digit. Just a guess.

 

[kyle555]

Ha. We were thinking the same thing. What if you turn off hookswitch flash? Can you prove it with a buttset?

 

[mdxm]

I just tried turning off the hookswitch flash and I get the same behavior.

 

[Sean655]

Suppose it could be a bug. For laughs, try changing the set type to another analog type (2410,6210,modem,fax).

 

[mdxm]

It won't let me use 2410 without changing to another port. I think that might be a DCP phone? I tried 6210 and was able to save, but the issue persists. I don't have modem or fax. I think those were aliases for 2500 in previous CM releases and I don't have those aliases in this CM. I also tried K2500 and 500 and no difference.