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One way audio for external conference party

Richard Simmons
Level 3
Level 3

Hi all,

If i have a conference call (hosted on CUCM software conference bridge) it works fine with internal users, if i add in an external party (PSTN) then that caller can only hear but not be heard. Calls to the PSTN work fine its only for conferences. Interestingly once the conference is over and only 1 internal and 1 external party remain the issue is still present.

set up is as follow;

CUCM 10.5(2)SU2

IP Phone (SIP) --> CUCM -->SIP TRUNK-->CUBE-->ITSP-->mobile phone  -- this call flow and vice-versa works fine

 

There is no ACL or firewall blocking RTP to the CUCM.

I was seeing this error in RTMT yesterday but since upgrading the CUBE IOS this no longer happens

'102 the call was terminated when a timer expired and a recovery routine was executed recover from this error'

CUBE config attached

 

Thanks in advance,

Richard

10 Replies 10

Richard Simmons
Level 3
Level 3

UPDATE - I have also noticed when a call is placed on hold it hears non CUCM MoH, i'm guessing this is coming from ITSP - When the call is resumed i have the same issue, where its one-way audio, mobile phone can receive but not transmit.

Thanks,

Richard

Hi Richard,

What is the codec used internally.

Similar issue was experienced by me, however it was not exact.

Do you have hardware conference Bridge and can you put in first place instead of software bridge.

Software bridge won't support mixing of different codec.

Also your one to one call between internal and external work ? and what is codec used?

 

Regards,

Raaj.

 

Thx for sharing the config. A long with the config can you share the following:

 

show voip rtp connection

sh sccp connection

sh call active voice brief

From the ip phone double press on the '?' button and share the IP addresses, codec RX/TX counters

voipgw0.ch#show voip rtp connection
VoIP RTP Port Usage Information:
Max Ports Available: 8091, Ports Reserved: 101, Ports in Use: 6
Port range not configured, Min: 16384, Max: 32767

                                                Ports       Ports       Ports   
Media-Address Range                             Available   Reserved    In-use  

Default Address-Range                           8091        101         6       

VoIP RTP active connections :
No. CallId     dstCallId  LocalRTP RmtRTP LocalIP                                       RemoteIP
1     898        899        16872    54318  132.185.142.210                             77.240.48.210
2     899        898        16874    30980  172.29.209.10                               172.29.209.117
3     1049       1050       16928    60254  132.185.142.210                             77.240.48.210
4     1050       1049       16930    23686  172.29.209.10                               172.29.210.45
5     1078       1079       16936    27040  172.29.209.10                               172.29.209.125
6     1079       1078       16938    46618  132.185.142.210                             77.240.48.209
Found 6 active RTP connections

 

voipgw0.ch#sh sccp connection

Total number of active session(s) 0, and connection(s) 0

voipgw0.ch#sh call active voice brief
<ID>: <CallID> <start>ms.<index> (<start>) +<connect> pid:<peer_id> <dir> <addr> <state>
  dur hh:mm:ss tx:<packets>/<bytes> rx:<packets>/<bytes> dscp:<packets violation> media:<packets violation> audio tos:<audio tos value> video tos:<video tos value>
 IP <ip>:<udp> rtt:<time>ms pl:<play>/<gap>ms lost:<lost>/<early>/<late>
  delay:<last>/<min>/<max>ms <codec> <textrelay> <transcoded

 media inactive detected:<y/n> media cntrl rcvd:<y/n> timestamp:<time>

 long duration call detected:<y/n> long duration call duration :<sec> timestamp:<time>
 LostPacketRate:<%> OutOfOrderRate:<%>
  MODEMPASS <method> buf:<fills>/<drains> loss <overall%> <multipkt>/<corrected>
   last <buf event time>s dur:<Min>/<Max>s
 FR <protocol> [int dlci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 ATM <protocol> [int vpi/vci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 Tele <int> (callID) [channel_id] tx:<tot>/<v>/<fax>ms <codec> noise:<l> acom:<l> i/o:<l>/<l> dBm
  MODEMRELAY info:<rcvd>/<sent>/<resent> xid:<rcvd>/<sent> total:<rcvd>/<sent>/<drops>
         speeds(bps): local <rx>/<tx> remote <rx>/<tx>
 Proxy <ip>:<audio udp>,<video udp>,<tcp0>,<tcp1>,<tcp2>,<tcp3> endpt: <type>/<manf>
 bw: <req>/<act> codec: <audio>/<video>
  tx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>
 rx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>

 

Telephony call-legs: 0
SIP call-legs: 6
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 6
175A : 898 70942660ms.1 (14:54:19.997 GMT Fri Jul 17 2015) +3760 pid:0 Answer 0014692588468 connected
 dur 00:38:53 tx:116667/18666720 rx:116670/18667200 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.210:54318 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

175A : 899 70942660ms.2 (14:54:19.997 GMT Fri Jul 17 2015) +3750 pid:809000 Originate 09714 connected
 dur 00:38:53 tx:116670/18667200 rx:116667/18666720 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.209.117:30980 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

182F : 1049 72801770ms.1 (15:25:19.107 GMT Fri Jul 17 2015) +2520 pid:0 Answer 07747707710 active
 dur 00:07:55 tx:23776/3804160 rx:23775/3804000 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.210:60254 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

182F : 1050 72801780ms.1 (15:25:19.117 GMT Fri Jul 17 2015) +2510 pid:809000 Originate 09524 active
 dur 00:07:55 tx:23775/3804000 rx:23776/3804160 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.210.45:23686 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

0    : 1078 73175440ms.1 (15:31:32.777 GMT Fri Jul 17 2015) +7600 pid:809000 Answer 09882 active
 dur 00:01:36 tx:4974/795363 rx:4966/794560 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.209.125:27040 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711alaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

0    : 1079 73175450ms.1 (15:31:32.787 GMT Fri Jul 17 2015) +7590 pid:89 Originate 07920024564 active
 dur 00:01:36 tx:4966/794560 rx:4974/795363 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.209:46618 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711alaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00


Telephony call-legs: 0
SIP call-legs: 6
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 6

 

Codec for internal calls is G722 and external calls is G711alaw - once the call is taken off hold the codec changes to G711ulaw

The phone show's packets send but none received.

Thanks,

Richard 

I am assuming all these logs for a single conference, please confirm?

 

Also, if the phone is showing zero received packets the then phone user can't hear any of the participants, please confirm?

 

Is your phone and CUCM on the same LAN or different subnets? My guess is they are on different subnets, please confirm.

 

Based on all above, you need to check the connectivity between your CUCM and Phones on RTP ports (UDP 16384 - 32767)

This was just a call between an internal and external party, audio flow is fine in both directions initially, i then placed the call on hold and resumed, once resumed there was one way audio - the external party could only hear the internal, internal could not hear external.

Phones and CUCM's are on the same subnet, no firewalls involved.

Mate, you are confusing me. Is you problem with conferencing or supplementary services?

 

Also, when you post outputs share the details of the IPs, numbers, etc.

Sorry for the confusion! I intially noticed it as an issue with conferencing but its also with supplementary services.

172.29.209.10 - CUBE Route

172.29.209.117 - IP Phone

172.29.209.16 & .17  - CUCM Servers

For the CUCM case, please do the following:

 

1. Establish a call and send show call active voice brief

2. Place the call on hold and share the same command

3. Resume the call and share the same command

 

I need also a full debug during the session (call, hold, resume). Please tell me what are the settings for the Send send-receive SDP in mid-call INVITE & Require SDP Inactive Exchange for Mid-Call Media Change in the SIP profile assigned to the SIP trunk in CUCM.

 

Call connected
#show call active voice brief
<ID>: <CallID> <start>ms.<index> (<start>) +<connect> pid:<peer_id> <dir> <addr> <state>
  dur hh:mm:ss tx:<packets>/<bytes> rx:<packets>/<bytes> dscp:<packets violation> media:<packets violation> audio tos:<audio tos value> video tos:<video tos value>
 IP <ip>:<udp> rtt:<time>ms pl:<play>/<gap>ms lost:<lost>/<early>/<late>
  delay:<last>/<min>/<max>ms <codec> <textrelay> <transcoded

 media inactive detected:<y/n> media cntrl rcvd:<y/n> timestamp:<time>

 long duration call detected:<y/n> long duration call duration :<sec> timestamp:<time>
 LostPacketRate:<%> OutOfOrderRate:<%>
  MODEMPASS <method> buf:<fills>/<drains> loss <overall%> <multipkt>/<corrected>
   last <buf event time>s dur:<Min>/<Max>s
 FR <protocol> [int dlci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 ATM <protocol> [int vpi/vci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 Tele <int> (callID) [channel_id] tx:<tot>/<v>/<fax>ms <codec> noise:<l> acom:<l> i/o:<l>/<l> dBm
  MODEMRELAY info:<rcvd>/<sent>/<resent> xid:<rcvd>/<sent> total:<rcvd>/<sent>/<drops>
         speeds(bps): local <rx>/<tx> remote <rx>/<tx>
 Proxy <ip>:<audio udp>,<video udp>,<tcp0>,<tcp1>,<tcp2>,<tcp3> endpt: <type>/<manf>
 bw: <req>/<act> codec: <audio>/<video>
  tx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>
 rx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>

 

Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2

0    : 18282 326517480ms.1 (13:53:55.147 GMT Mon Jul 20 2015) +10720 pid:809000 Answer 09882 active
 dur 00:00:29 tx:1660/265600 rx:1651/264160 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.209.125:27856 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711alaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

0    : 18283 326517500ms.1 (13:53:55.167 GMT Mon Jul 20 2015) +10700 pid:89 Originate 07XXXXXXXXX active
 dur 00:00:29 tx:1651/264160 rx:1660/265600 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.210:41160 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711alaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00


Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2


Call On Hold

#show call active voice brief
<ID>: <CallID> <start>ms.<index> (<start>) +<connect> pid:<peer_id> <dir> <addr> <state>
  dur hh:mm:ss tx:<packets>/<bytes> rx:<packets>/<bytes> dscp:<packets violation> media:<packets violation> audio tos:<audio tos value> video tos:<video tos value>
 IP <ip>:<udp> rtt:<time>ms pl:<play>/<gap>ms lost:<lost>/<early>/<late>
  delay:<last>/<min>/<max>ms <codec> <textrelay> <transcoded

 media inactive detected:<y/n> media cntrl rcvd:<y/n> timestamp:<time>

 long duration call detected:<y/n> long duration call duration :<sec> timestamp:<time>
 LostPacketRate:<%> OutOfOrderRate:<%>
  MODEMPASS <method> buf:<fills>/<drains> loss <overall%> <multipkt>/<corrected>
   last <buf event time>s dur:<Min>/<Max>s
 FR <protocol> [int dlci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 ATM <protocol> [int vpi/vci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 Tele <int> (callID) [channel_id] tx:<tot>/<v>/<fax>ms <codec> noise:<l> acom:<l> i/o:<l>/<l> dBm
  MODEMRELAY info:<rcvd>/<sent>/<resent> xid:<rcvd>/<sent> total:<rcvd>/<sent>/<drops>
         speeds(bps): local <rx>/<tx> remote <rx>/<tx>
 Proxy <ip>:<audio udp>,<video udp>,<tcp0>,<tcp1>,<tcp2>,<tcp3> endpt: <type>/<manf>
 bw: <req>/<act> codec: <audio>/<video>
  tx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>
 rx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>

 

Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2

0    : 18282 326517480ms.1 (13:53:55.147 GMT Mon Jul 20 2015) +10720 pid:809000 Answer 09882 connected
 dur 00:00:41 tx:1788/285921 rx:2218/354880 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.209.16:4000 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

0    : 18283 326517500ms.1 (13:53:55.167 GMT Mon Jul 20 2015) +10700 pid:89 Originate 07XXXXXXXXX connected
 dur 00:00:41 tx:2218/354880 rx:1788/285921 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.210:41160 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00


Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2

Call Resumed

#show call active voice brief
<ID>: <CallID> <start>ms.<index> (<start>) +<connect> pid:<peer_id> <dir> <addr> <state>
  dur hh:mm:ss tx:<packets>/<bytes> rx:<packets>/<bytes> dscp:<packets violation> media:<packets violation> audio tos:<audio tos value> video tos:<video tos value>
 IP <ip>:<udp> rtt:<time>ms pl:<play>/<gap>ms lost:<lost>/<early>/<late>
  delay:<last>/<min>/<max>ms <codec> <textrelay> <transcoded

 media inactive detected:<y/n> media cntrl rcvd:<y/n> timestamp:<time>

 long duration call detected:<y/n> long duration call duration :<sec> timestamp:<time>
 LostPacketRate:<%> OutOfOrderRate:<%>
  MODEMPASS <method> buf:<fills>/<drains> loss <overall%> <multipkt>/<corrected>
   last <buf event time>s dur:<Min>/<Max>s
 FR <protocol> [int dlci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 ATM <protocol> [int vpi/vci cid] vad:<y/n> dtmf:<y/n> seq:<y/n>
  <codec> (payload size)
 Tele <int> (callID) [channel_id] tx:<tot>/<v>/<fax>ms <codec> noise:<l> acom:<l> i/o:<l>/<l> dBm
  MODEMRELAY info:<rcvd>/<sent>/<resent> xid:<rcvd>/<sent> total:<rcvd>/<sent>/<drops>
         speeds(bps): local <rx>/<tx> remote <rx>/<tx>
 Proxy <ip>:<audio udp>,<video udp>,<tcp0>,<tcp1>,<tcp2>,<tcp3> endpt: <type>/<manf>
 bw: <req>/<act> codec: <audio>/<video>
  tx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>
 rx: <audio pkts>/<audio bytes>,<video pkts>/<video bytes>,<t120 pkts>/<t120 bytes>

 

Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2

0    : 18282 326517480ms.1 (13:53:55.143 GMT Mon Jul 20 2015) +10720 pid:809000 Answer 09882 connected
 dur 00:00:48 tx:1788/285921 rx:2537/405920 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 172.29.209.125:27856 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00

0    : 18283 326517500ms.1 (13:53:55.163 GMT Mon Jul 20 2015) +10700 pid:89 Originate 07XXXXXXXXX connected
 dur 00:00:48 tx:2537/405920 rx:1788/285921 dscp:0 media:0 audio tos:0xB8 video tos:0x0
 IP 77.240.48.210:41160 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off Transcoded: No
 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
 LostPacketRate:0.00 OutOfOrderRate:0.00


Telephony call-legs: 0
SIP call-legs: 2
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2

 

Send send-receive SDP in mid-call INVITE is checked

Require SDP Inactive Exchange for Mid-Call Media Change is unchecked

 

Thanks,

Richard

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