Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

IAX2 Trunk between 2 elastix - busy tone when calling from one side

Posted on 2011-09-30
2
Medium Priority
?
3,732 Views
Last Modified: 2012-05-12
Hello

With a fiend we are testing the scenario of interconnecting 2 elastix boxes via IAX2 trunk over internet with openvpn.We have used this guide for the setup: http://blogs.elastix.org/en/2009/11/interoffice-trunking-with-elastix-iax/

So the details now:

-Elastix version 2.0.4 on both ends
-OpenVPN up and running on both ends (we can ping each side successfully).
-My box A is using a range of 1XX extensions and my friends box  is using 400X range of extensions.

My trunk config A:

Trunk name: reptec

Peer Details
username=reptec
type=peer
secret=secret
qualify=yes
host=10.99.88.1
context=from-internal
trunk=yes
allow=gsm

User Context: acid

User details

type=user
secret=secret
host=10.99.88.1
context=from-internal
allow=gsm


Outbound route

Route name: spacexts
IntraCompany route=enabled
Dial Pattern=400X
Trunk Sequence for Matched Routes
0=reptec

My friends config  B:

Trunk name: acid

Peer details:

username=acid
type=peer
secret=secret
qualify=yes
host=10.99.88.6
context=from-internal
trunk=yes
allow=gsm

User context: reptec

type=user
secret=secret
host=10.99.88.6
context=from-internal
allow=gsm

Outbound route

Route name: acidexts

IntraCompany route=enabled

Trunk Sequence for Matched Routes
0=acid
-----------------------------------------------

So far so good.On both ends we can see that IAX2 trunk is up and running by giving:
iax2 show peers
Name/Username    Host                 Mask             Port          Status
reptec/reptec    10.99.88.1      (S)  255.255.255.255  4569 (T)      OK (62 ms)
1 iax2 peers [1 online, 0 offline, 0 unmonitored]
--------------------------------------------------------------------------------------
My friend can successfully call my extension A (101)  from his side B 4002 ext.
When i try to call him on his extension B 4002 i always get a busy tone.
The following is logged on my asterisk:

IAX2 Debugging Enabled
  == Using SIP RTP TOS bits 184
  == Using SIP RTP CoS mark 5
    -- Executing [4002@from-internal:1] Macro("SIP/101-00000000", "user-callerid                                          ,SKIPTTL,") in new stack
    -- Executing [s@macro-user-callerid:1] Set("SIP/101-00000000", "AMPUSER=101"                                          ) in new stack
    -- Executing [s@macro-user-callerid:2] GotoIf("SIP/101-00000000", "0?report"                                          ) in new stack
    -- Executing [s@macro-user-callerid:3] ExecIf("SIP/101-00000000", "1?Set(REA                                          LCALLERIDNUM=101)") in new stack
    -- Executing [s@macro-user-callerid:4] Set("SIP/101-00000000", "AMPUSER=101"                                          ) in new stack
    -- Executing [s@macro-user-callerid:5] Set("SIP/101-00000000", "AMPUSERCIDNA                                          ME=Yiannis Milios") in new stack
    -- Executing [s@macro-user-callerid:6] GotoIf("SIP/101-00000000", "0?report"                                          ) in new stack
    -- Executing [s@macro-user-callerid:7] Set("SIP/101-00000000", "AMPUSERCID=1                                          01") in new stack
    -- Executing [s@macro-user-callerid:8] Set("SIP/101-00000000", "CALLERID(all                                          )="Yiannis Milios" <101>") in new stack
    -- Executing [s@macro-user-callerid:9] ExecIf("SIP/101-00000000", "0?Set(CHA                                          NNEL(language)=)") in new stack
    -- Executing [s@macro-user-callerid:10] GotoIf("SIP/101-00000000", "1?contin                                          ue") in new stack
    -- Goto (macro-user-callerid,s,19)
    -- Executing [s@macro-user-callerid:19] Set("SIP/101-00000000", "CALLERID(nu                                          mber)=101") in new stack
    -- Executing [s@macro-user-callerid:20] Set("SIP/101-00000000", "CALLERID(na                                          me)=Yiannis Milios") in new stack
    -- Executing [s@macro-user-callerid:21] NoOp("SIP/101-00000000", "Using Call                                          erID "Yiannis Milios" <101>") in new stack
    -- Executing [4002@from-internal:2] NoOp("SIP/101-00000000", "Calling Out Ro                                          ute: spacexts") in new stack
    -- Executing [4002@from-internal:3] Set("SIP/101-00000000", "INTRACOMPANYROU                                          TE=YES") in new stack
    -- Executing [4002@from-internal:4] Set("SIP/101-00000000", "MOHCLASS=defaul                                          t") in new stack
    -- Executing [4002@from-internal:5] Set("SIP/101-00000000", "_NODEST=") in n                                          ew stack
    -- Executing [4002@from-internal:6] Macro("SIP/101-00000000", "record-enable                                          ,101,OUT,") in new stack
    -- Executing [s@macro-record-enable:1] GotoIf("SIP/101-00000000", "1?check")                                           in new stack
    -- Goto (macro-record-enable,s,4)
    -- Executing [s@macro-record-enable:4] ExecIf("SIP/101-00000000", "0?MacroEx                                          it()") in new stack
    -- Executing [s@macro-record-enable:5] GotoIf("SIP/101-00000000", "0?Group:O                                          UT") in new stack
    -- Goto (macro-record-enable,s,15)
    -- Executing [s@macro-record-enable:15] GotoIf("SIP/101-00000000", "0?IN") i                                          n new stack
    -- Executing [s@macro-record-enable:16] ExecIf("SIP/101-00000000", "1?MacroE                                          xit()") in new stack
    -- Executing [4002@from-internal:7] Macro("SIP/101-00000000", "dialout-trunk                                          ,2,4002,") in new stack
    -- Executing [s@macro-dialout-trunk:1] Set("SIP/101-00000000", "DIAL_TRUNK=2                                          ") in new stack
    -- Executing [s@macro-dialout-trunk:2] GosubIf("SIP/101-00000000", "0?sub-pi                                          ncheck,s,1") in new stack
    -- Executing [s@macro-dialout-trunk:3] GotoIf("SIP/101-00000000", "0?disable                                          trunk,1") in new stack
    -- Executing [s@macro-dialout-trunk:4] Set("SIP/101-00000000", "DIAL_NUMBER=                                          4002") in new stack
    -- Executing [s@macro-dialout-trunk:5] Set("SIP/101-00000000", "DIAL_TRUNK_O                                          PTIONS=tr") in new stack
    -- Executing [s@macro-dialout-trunk:6] Set("SIP/101-00000000", "OUTBOUND_GRO                                          UP=OUT_2") in new stack
    -- Executing [s@macro-dialout-trunk:7] GotoIf("SIP/101-00000000", "1?nomax")                                           in new stack
    -- Goto (macro-dialout-trunk,s,9)
    -- Executing [s@macro-dialout-trunk:9] GotoIf("SIP/101-00000000", "1?skipout                                          cid") in new stack
    -- Goto (macro-dialout-trunk,s,12)
    -- Executing [s@macro-dialout-trunk:12] GosubIf("SIP/101-00000000", "0?sub-f                                          lp-2,s,1") in new stack
    -- Executing [s@macro-dialout-trunk:13] Set("SIP/101-00000000", "OUTNUM=4002                                          ") in new stack
    -- Executing [s@macro-dialout-trunk:14] Set("SIP/101-00000000", "custom=IAX2                                          /reptec") in new stack
    -- Executing [s@macro-dialout-trunk:15] ExecIf("SIP/101-00000000", "0?Set(DI                                          AL_TRUNK_OPTIONS=M(setmusic^default)tr)") in new stack
    -- Executing [s@macro-dialout-trunk:16] Macro("SIP/101-00000000", "dialout-t                                          runk-predial-hook,") in new stack
    -- Executing [s@macro-dialout-trunk-predial-hook:1] MacroExit("SIP/101-00000                                          000", "") in new stack
    -- Executing [s@macro-dialout-trunk:17] GotoIf("SIP/101-00000000", "0?bypass                                          ,1") in new stack
    -- Executing [s@macro-dialout-trunk:18] GotoIf("SIP/101-00000000", "0?custom                                          trunk") in new stack
    -- Executing [s@macro-dialout-trunk:19] Dial("SIP/101-00000000", "IAX2/repte                                          c/4002,300,tr") in new stack
    -- Hungup 'IAX2/reptec-16643'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [s@macro-dialout-trunk:20] NoOp("SIP/101-00000000", "Dial faile                                          d for some reason with DIALSTATUS = CHANUNAVAIL and HANGUPCAUSE = 0") in new sta                                          ck
    -- Executing [s@macro-dialout-trunk:21] Goto("SIP/101-00000000", "s-CHANUNAV                                          AIL,1") in new stack
    -- Goto (macro-dialout-trunk,s-CHANUNAVAIL,1)
    -- Executing [s-CHANUNAVAIL@macro-dialout-trunk:1] Set("SIP/101-00000000", "                                          RC=0") in new stack
    -- Executing [s-CHANUNAVAIL@macro-dialout-trunk:2] Goto("SIP/101-00000000",                                           "0,1") in new stack
    -- Goto (macro-dialout-trunk,0,1)
    -- Executing [0@macro-dialout-trunk:1] Goto("SIP/101-00000000", "continue,1"                                          ) in new stack
    -- Goto (macro-dialout-trunk,continue,1)
    -- Executing [continue@macro-dialout-trunk:1] GotoIf("SIP/101-00000000", "1?                                          noreport") in new stack
    -- Goto (macro-dialout-trunk,continue,3)
    -- Executing [continue@macro-dialout-trunk:3] NoOp("SIP/101-00000000", "TRUN                                          K Dial failed due to CHANUNAVAIL HANGUPCAUSE: 0 - failing through to other trunk                                          s") in new stack
    -- Executing [continue@macro-dialout-trunk:4] Set("SIP/101-00000000", "CALLE                                          RID(number)=101") in new stack
    -- Executing [4002@from-internal:8] Macro("SIP/101-00000000", "outisbusy,")                                           in new stack
    -- Executing [s@macro-outisbusy:1] Progress("SIP/101-00000000", "") in new s                                          tack
    -- Executing [s@macro-outisbusy:2] GotoIf("SIP/101-00000000", "0?emergency,1                                          ") in new stack
    -- Executing [s@macro-outisbusy:3] GotoIf("SIP/101-00000000", "1?intracompan                                          y,1") in new stack
    -- Goto (macro-outisbusy,intracompany,1)
    -- Executing [intracompany@macro-outisbusy:1] Playback("SIP/101-00000000", "                                          all-circuits-busy-now&pls-try-call-later, noanswer") in new stack
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: HANGUP
   Timestamp: 00018ms  SCall: 16643  DCall: 00000 [10.99.88.1:4569]
   CAUSE CODE      : 0

    -- Executing [intracompany@macro-outisbusy:2] Congestion("SIP/101-00000000",                                           "20") in new stack
  == Spawn extension (macro-outisbusy, intracompany, 2) exited non-zero on 'SIP/                                          101-00000000' in macro 'outisbusy'
  == Spawn extension (from-internal, 4002, 8) exited non-zero on 'SIP/101-000000                                          00'
    -- Executing [h@from-internal:1] Macro("SIP/101-00000000", "hangupcall") in                                           new stack
    -- Executing [s@macro-hangupcall:1] GotoIf("SIP/101-00000000", "1?endmixmonc                                          heck") in new stack
    -- Goto (macro-hangupcall,s,9)
    -- Executing [s@macro-hangupcall:9] NoOp("SIP/101-00000000", "End of MIXMON                                           check") in new stack
    -- Executing [s@macro-hangupcall:10] GotoIf("SIP/101-00000000", "1?nomeetmem                                          on") in new stack
    -- Goto (macro-hangupcall,s,15)
    -- Executing [s@macro-hangupcall:15] NoOp("SIP/101-00000000", "MEETME_RECORD                                          INGFILE=") in new stack
    -- Executing [s@macro-hangupcall:16] GotoIf("SIP/101-00000000", "1?noautomon                                          ") in new stack
    -- Goto (macro-hangupcall,s,18)
    -- Executing [s@macro-hangupcall:18] NoOp("SIP/101-00000000", "TOUCH_MONITOR                                          _OUTPUT=") in new stack
    -- Executing [s@macro-hangupcall:19] GotoIf("SIP/101-00000000", "1?noautomon                                          2") in new stack
    -- Goto (macro-hangupcall,s,25)
    -- Executing [s@macro-hangupcall:25] NoOp("SIP/101-00000000", "MONITOR_FILEN                                          AME=") in new stack
    -- Executing [s@macro-hangupcall:26] GotoIf("SIP/101-00000000", "1?skiprg")                                           in new stack
    -- Goto (macro-hangupcall,s,29)
    -- Executing [s@macro-hangupcall:29] GotoIf("SIP/101-00000000", "1?skipblkvm                                          ") in new stack
    -- Goto (macro-hangupcall,s,32)
    -- Executing [s@macro-hangupcall:32] GotoIf("SIP/101-00000000", "1?theend")                                           in new stack
    -- Goto (macro-hangupcall,s,34)
    -- Executing [s@macro-hangupcall:34] Hangup("SIP/101-00000000", "") in new s                                          tack
  == Spawn extension (macro-hangupcall, s, 34) exited non-zero on 'SIP/101-00000                                          000' in macro 'hangupcall'
  == Spawn extension (from-internal, h, 1) exited non-zero on 'SIP/101-00000000'
Tx-Frame Retry[001] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: HANGUP
   Timestamp: 00018ms  SCall: 16643  DCall: 00000 [10.99.88.1:4569]
   CAUSE CODE      : 0

Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: POKE
   Timestamp: 00006ms  SCall: 04809  DCall: 00000 [10.99.88.1:4569]

Rx-Frame Retry[Yes] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: PONG
   Timestamp: 00006ms  SCall: 00001  DCall: 04809 [10.99.88.1:4569]
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: ACK
   Timestamp: 00006ms  SCall: 04809  DCall: 00001 [10.99.88.1:4569]

This is really strange.I have tried playing with different settings on both trunks but i didn't find
a solution.
Can anyone help? This is a test environment so there is not problem playing around with the settings.
Thank you very much.
0
Comment
Question by:aciddo
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 

Author Comment

by:aciddo
ID: 36899242
I had some progress by changing e bit the config as below:

 PEER DETAILS
 ------------
 username=reptec
 type=peer
 secret=secret
 qualify=yes
 host=10.99.88.1
 context=from-internal
 dtmfmode=rfc2833
 videosupport=yes
 trunk=yes
 allow=gsm&alaw&ulaw&GSM&G722&G723&G729&iLBC&PCMU&PCMA&AACLC&H264&H264+&H263&H263p&H263+&mp4v-es

 USER DETAILS
 ----------------
 type=user
 secret=secret
 host=10.99.88.1
 context=from-internal
 trunk=yes
 disallow=all
 dtmfmode=rfc2833
 videosupport=yes
 allow=GSM&G722&G723&G729&iLBC&PCMU&PCMA&AACLC&H264&H264+&H263&H263p&H263+&mp4v-es

 Now i am able to hear the calling ringing (other party ext. 4002 has voice mail enabled)but for some strange reason i cannot hear the voice message although the call is in progress.

 Below is the log:
 -----------------
 == Using SIP RTP TOS bits 184
 == Using SIP RTP CoS mark 5
 -- Executing [4002@from-internal:1] Macro("SIP/101-0000000a", "user-callerid,SKIPTTL,") in new stack
 -- Executing [s@macro-user-callerid:1] Set("SIP/101-0000000a", "AMPUSER=101") in new stack
 -- Executing [s@macro-user-callerid:2] GotoIf("SIP/101-0000000a", "0?report") in new stack
 -- Executing [s@macro-user-callerid:3] ExecIf("SIP/101-0000000a", "1?Set(REALCALLERIDNUM=101)") in new stack
 -- Executing [s@macro-user-callerid:4] Set("SIP/101-0000000a", "AMPUSER=101") in new stack
 -- Executing [s@macro-user-callerid:5] Set("SIP/101-0000000a", "AMPUSERCIDNAME=Yiannis Milios") in new stack
 -- Executing [s@macro-user-callerid:6] GotoIf("SIP/101-0000000a", "0?report") in new stack
 -- Executing [s@macro-user-callerid:7] Set("SIP/101-0000000a", "AMPUSERCID=101") in new stack
 -- Executing [s@macro-user-callerid:8] Set("SIP/101-0000000a", "CALLERID(all)="Yiannis Milios" <101>") in new stack
 -- Executing [s@macro-user-callerid:9] ExecIf("SIP/101-0000000a", "0?Set(CHANNEL(language)=)") in new stack
 -- Executing [s@macro-user-callerid:10] GotoIf("SIP/101-0000000a", "1?continue") in new stack
 -- Goto (macro-user-callerid,s,19)
 -- Executing [s@macro-user-callerid:19] Set("SIP/101-0000000a", "CALLERID(number)=101") in new stack
 -- Executing [s@macro-user-callerid:20] Set("SIP/101-0000000a", "CALLERID(name)=Yiannis Milios") in new stack
 -- Executing [s@macro-user-callerid:21] NoOp("SIP/101-0000000a", "Using CallerID "Yiannis Milios" <101>") in new stack
 -- Executing [4002@from-internal:2] NoOp("SIP/101-0000000a", "Calling Out Route: spacexts") in new stack
 -- Executing [4002@from-internal:3] Set("SIP/101-0000000a", "INTRACOMPANYROUTE=YES") in new stack
 -- Executing [4002@from-internal:4] Set("SIP/101-0000000a", "MOHCLASS=default") in new stack
 -- Executing [4002@from-internal:5] Set("SIP/101-0000000a", "_NODEST=") in new stack
 -- Executing [4002@from-internal:6] Macro("SIP/101-0000000a", "record-enable,101,OUT,") in new stack
 -- Executing [s@macro-record-enable:1] GotoIf("SIP/101-0000000a", "1?check") in new stack
 -- Goto (macro-record-enable,s,4)
 -- Executing [s@macro-record-enable:4] ExecIf("SIP/101-0000000a", "0?MacroExit()") in new stack
 -- Executing [s@macro-record-enable:5] GotoIf("SIP/101-0000000a", "0?Group:OUT") in new stack
 -- Goto (macro-record-enable,s,15)
 -- Executing [s@macro-record-enable:15] GotoIf("SIP/101-0000000a", "0?IN") in new stack
 -- Executing [s@macro-record-enable:16] ExecIf("SIP/101-0000000a", "1?MacroExit()") in new stack
 -- Executing [4002@from-internal:7] Macro("SIP/101-0000000a", "dialout-trunk,2,4002,") in new stack
 -- Executing [s@macro-dialout-trunk:1] Set("SIP/101-0000000a", "DIAL_TRUNK=2") in new stack
 -- Executing [s@macro-dialout-trunk:2] GosubIf("SIP/101-0000000a", "0?sub-pincheck,s,1") in new stack
 -- Executing [s@macro-dialout-trunk:3] GotoIf("SIP/101-0000000a", "0?disabletrunk,1") in new stack
 -- Executing [s@macro-dialout-trunk:4] Set("SIP/101-0000000a", "DIAL_NUMBER=4002") in new stack
 -- Executing [s@macro-dialout-trunk:5] Set("SIP/101-0000000a", "DIAL_TRUNK_OPTIONS=tr") in new stack
 -- Executing [s@macro-dialout-trunk:6] Set("SIP/101-0000000a", "OUTBOUND_GROUP=OUT_2") in new stack
 -- Executing [s@macro-dialout-trunk:7] GotoIf("SIP/101-0000000a", "1?nomax") in new stack
 -- Goto (macro-dialout-trunk,s,9)
 -- Executing [s@macro-dialout-trunk:9] GotoIf("SIP/101-0000000a", "1?skipoutcid") in new stack
 -- Goto (macro-dialout-trunk,s,12)
 -- Executing [s@macro-dialout-trunk:12] GosubIf("SIP/101-0000000a", "0?sub-flp-2,s,1") in new stack
 -- Executing [s@macro-dialout-trunk:13] Set("SIP/101-0000000a", "OUTNUM=4002") in new stack
 -- Executing [s@macro-dialout-trunk:14] Set("SIP/101-0000000a", "custom=IAX2/reptec") in new stack
 -- Executing [s@macro-dialout-trunk:15] ExecIf("SIP/101-0000000a", "0?Set(DIAL_TRUNK_OPTIONS=M(setmusic^default)tr)") in new stack
 -- Executing [s@macro-dialout-trunk:16] Macro("SIP/101-0000000a", "dialout-trunk-predial-hook,") in new stack
 -- Executing [s@macro-dialout-trunk-predial-hook:1] MacroExit("SIP/101-0000000a", "") in new stack
 -- Executing [s@macro-dialout-trunk:17] GotoIf("SIP/101-0000000a", "0?bypass,1") in new stack
 -- Executing [s@macro-dialout-trunk:18] GotoIf("SIP/101-0000000a", "0?customtrunk") in new stack
 -- Executing [s@macro-dialout-trunk:19] Dial("SIP/101-0000000a", "IAX2/reptec/4002,300,tr") in new stack
 -- Called IAX2/reptec/4002
 -- Call accepted by 10.99.88.1 (format gsm)
 -- Format for call is gsm
 -- IAX2/reptec-16988 answered SIP/101-0000000a
 -- Executing [h@macro-dialout-trunk:1] Macro("SIP/101-0000000a", "hangupcall,") in new stack
 -- Executing [s@macro-hangupcall:1] GotoIf("SIP/101-0000000a", "1?endmixmoncheck") in new stack
 -- Goto (macro-hangupcall,s,9)
 -- Executing [s@macro-hangupcall:9] NoOp("SIP/101-0000000a", "End of MIXMON check") in new stack
 -- Executing [s@macro-hangupcall:10] GotoIf("SIP/101-0000000a", "1?nomeetmemon") in new stack
 -- Goto (macro-hangupcall,s,15)
 -- Executing [s@macro-hangupcall:15] NoOp("SIP/101-0000000a", "MEETME_RECORDINGFILE=") in new stack
 -- Executing [s@macro-hangupcall:16] GotoIf("SIP/101-0000000a", "1?noautomon") in new stack
 -- Goto (macro-hangupcall,s,18)
 -- Executing [s@macro-hangupcall:18] NoOp("SIP/101-0000000a", "TOUCH_MONITOR_OUTPUT=") in new stack
 -- Executing [s@macro-hangupcall:19] GotoIf("SIP/101-0000000a", "1?noautomon2") in new stack
 -- Goto (macro-hangupcall,s,25)
 -- Executing [s@macro-hangupcall:25] NoOp("SIP/101-0000000a", "MONITOR_FILENAME=") in new stack
 -- Executing [s@macro-hangupcall:26] GotoIf("SIP/101-0000000a", "1?skiprg") in new stack
 -- Goto (macro-hangupcall,s,29)
 -- Executing [s@macro-hangupcall:29] GotoIf("SIP/101-0000000a", "1?skipblkvm") in new stack
 -- Goto (macro-hangupcall,s,32)
 -- Executing [s@macro-hangupcall:32] GotoIf("SIP/101-0000000a", "1?theend") in new stack
 -- Goto (macro-hangupcall,s,34)
 -- Executing [s@macro-hangupcall:34] Hangup("SIP/101-0000000a", "") in new stack
 == Spawn extension (macro-hangupcall, s, 34) exited non-zero on 'SIP/101-0000000a' in macro 'hangupcall'
 == Spawn extension (macro-dialout-trunk, h, 1) exited non-zero on 'SIP/101-0000000a'
 -- Hungup 'IAX2/reptec-16988'
 == Spawn extension (macro-dialout-trunk, s, 19) exited non-zero on 'SIP/101-0000000a' in macro 'dialout-trunk'
 == Spawn extension (from-internal, 4002, 7) exited non-zero on 'SIP/101-0000000a'
 -- Remote UNIX connection
 -- Remote UNIX connection disconnected


 When other party (ext. 4002) initiates a call to me it is completed successfully and i can hear him as well.I think the issue is on my side.Maybe something with the codecs going wrong....
0
 

Accepted Solution

by:
aciddo earned 0 total points
ID: 37005046
fixed by changing codec on both sides to:

allow=alaw&ulaw
0

Featured Post

Better audio for more successful meetings

Challenge: S&ME was tired of poor audio quality of Skype for Business calls in mid-sized meeting and training rooms. They were looking for a reliable and cost efficient solution to replace the existing conferencing system.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is a step by step guide on creating single number reach (mobility) for Cisco Call Manager.  After configuring this when someone calls your deskphone after 3-4 rings your cell phone will start to ring.  If you do not answer the call will go to y…
Not everyone has adapted to a rapid advancement in technology; there are people who are reluctant or afraid to delve into this brave new world of IT. If you have a friend or a family member who suffers from the so-called technophobia, here is how yo…
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question