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Home > Archive > Voice over IP Cisco > January 2007 > Loss of RTP
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| Hi,
Got remote site with 2801 and 6 users. When these users phone HQ over the
WAN they sometimes loose the audio (remote site can't hear HQ but HQ can
still hear remote site) and this happens intermittent. Funny thing is that
if remote site puts HQ user on hold when there is no audio nad take them off
hold - normal audio works both ways again. All other Remote sites does not
have this problem. Remote site 2801 has following config running
c2801-ipvoice-mz.124-4.T5.bin IOS:
voice-card 0
!
!
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
h323
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
interface Multilink1
bandwidth 512
ip address x.x.x.x 255.255.255.252
ip tcp header-compression iphc-format
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink interleave
ppp multilink group 1
ppp multilink fragment delay 20
service-policy output Voice-QOS
ip rtp header-compression iphc-format
!
!
interface FastEthernet0/1/0
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
interface FastEthernet0/1/1
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
!
interface Serial0/2/0
bandwidth 512
no ip address
ip pim sparse-dense-mode
encapsulation ppp
no ip mroute-cache
load-interval 30
ppp multilink
ppp multilink group 1
!
!
ip access-list extended SIGNALING
permit tcp any any range 2000 2002
permit tcp any any eq 1859
permit tcp any any eq 1659
permit tcp any any range 2427 2428
permit tcp any any eq 2727
permit tcp any any eq 1300
permit tcp any any range 1718 1720
permit tcp any any range 11000 11999
permit udp any any eq 1300
permit udp any any range 1718 1720
permit udp any any range 2427 2428
permit tcp any range 2000 2002 any
permit tcp any eq 1859 any
permit tcp any eq 1659 any
permit tcp any range 2427 2428 any
permit tcp any eq 2727 any
permit tcp any eq 1300 any
permit tcp any range 1718 1720 any
permit tcp any range 11000 11999 any
permit udp any eq 1300 any
permit udp any range 1718 1720 any
permit udp any range 2427 2428 any
permit udp any any eq 11720
permit udp any eq 11720 any
ip access-list extended VOICE
permit udp any range 16384 32767 any range 16384 32767
!
and the HQ router has the following running c3640-is-mz.122-1a.bin IOS:
class-map match-any VoIP_Control_X
match ip dscp 24
match ip dscp 26
!
class-map match-any VOIP_Bearer_X
match ip dscp 46
!
policy-map Voice-QOS_X
class VoIP_Control_X
bandwidth 26
class VOIP_Bearer_X
priority 160
class class-default
fair-queue
!
interface Multilink4
description Link to X
bandwidth 512
ip address x.x.x.y 255.255.255.252
no ip route-cache cef
ip tcp header-compression iphc-format
no ip mroute-cache
service-policy output Voice-QOS_X
no cdp enable
ppp multilink
ppp multilink fragment-delay 20
ppp multilink interleave
multilink-group 4
ip rtp header-compression iphc-format
!
Any ideas???
Thnx
Lemon
| |
| Ryan Ratliff 2007-01-30, 1:11 pm |
| When you put someone on hold and resume them it sets up an entirely
new RTP stream (different ports, etc).
If the users hit the i or ? button on the IP phone twice it will
bring up packet counters for the current call. Have them do this
when the problem occurs and note whether the Rx counters are
incrementing for the phone that cannot hear anything. That will give
you a clue where to look.
-Ryan
On Jan 30, 2007, at 9:19 AM, Lemon wrote:
Hi,
Got remote site with 2801 and 6 users. When these users phone HQ over
the WAN they sometimes loose the audio (remote site can't hear HQ but
HQ can still hear remote site) and this happens intermittent. Funny
thing is that if remote site puts HQ user on hold when there is no
audio nad take them off hold - normal audio works both ways again.
All other Remote sites does not have this problem. Remote site 2801
has following config running c2801-ipvoice-mz.124-4.T5.bin IOS:
voice-card 0
!
!
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
h323
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
interface Multilink1
bandwidth 512
ip address x.x.x.x 255.255.255.252
ip tcp header-compression iphc-format
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink interleave
ppp multilink group 1
ppp multilink fragment delay 20
service-policy output Voice-QOS
ip rtp header-compression iphc-format
!
!
interface FastEthernet0/1/0
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
interface FastEthernet0/1/1
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
!
interface Serial0/2/0
bandwidth 512
no ip address
ip pim sparse-dense-mode
encapsulation ppp
no ip mroute-cache
load-interval 30
ppp multilink
ppp multilink group 1
!
!
ip access-list extended SIGNALING
permit tcp any any range 2000 2002
permit tcp any any eq 1859
permit tcp any any eq 1659
permit tcp any any range 2427 2428
permit tcp any any eq 2727
permit tcp any any eq 1300
permit tcp any any range 1718 1720
permit tcp any any range 11000 11999
permit udp any any eq 1300
permit udp any any range 1718 1720
permit udp any any range 2427 2428
permit tcp any range 2000 2002 any
permit tcp any eq 1859 any
permit tcp any eq 1659 any
permit tcp any range 2427 2428 any
permit tcp any eq 2727 any
permit tcp any eq 1300 any
permit tcp any range 1718 1720 any
permit tcp any range 11000 11999 any
permit udp any eq 1300 any
permit udp any range 1718 1720 any
permit udp any range 2427 2428 any
permit udp any any eq 11720
permit udp any eq 11720 any
ip access-list extended VOICE
permit udp any range 16384 32767 any range 16384 32767
!
and the HQ router has the following running c3640-is-mz.122-1a.bin IOS:
class-map match-any VoIP_Control_X
match ip dscp 24
match ip dscp 26
!
class-map match-any VOIP_Bearer_X
match ip dscp 46
!
policy-map Voice-QOS_X
class VoIP_Control_X
bandwidth 26
class VOIP_Bearer_X
priority 160
class class-default
fair-queue
!
interface Multilink4
description Link to X
bandwidth 512
ip address x.x.x.y 255.255.255.252
no ip route-cache cef
ip tcp header-compression iphc-format
no ip mroute-cache
service-policy output Voice-QOS_X
no cdp enable
ppp multilink
ppp multilink fragment-delay 20
ppp multilink interleave
multilink-group 4
ip rtp header-compression iphc-format
!
Any ideas???
Thnx
Lemon
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| Jason Aarons \(US\) 2007-01-30, 1:11 pm |
| I don't usually use "voice call carrier capacity active", I would test removing it, maybe it is disconnecting the call?
Any particular reason you are using it?
________________________________
From: cisco-voip-bounces@puck.nether.net on behalf of Lemon
Sent: Tue 1/30/2007 9:19 AM
To: cisco-voip@puck.nether.net
Subject: [cisco-voip] Loss of RTP
Hi,
Got remote site with 2801 and 6 users. When these usersphone HQ over the WAN they sometimes loose the audio (remote site can't hear HQ but HQ can still hear remote site) and this happens intermittent. Funny thing is that if remote site puts HQ user on hold when there is no audio nad take them off hold - normal audio works both ways again. All otherRemote sites does not have this problem. Remote site 2801 has following config running c2801-ipvoice-mz.124-4.T5.bin IOS:
voice-card 0
!
!
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
h323
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
interface Multilink1
bandwidth 512
ip address x.x.x.x 255.255.255.252
ip tcp header-compression iphc-format
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink interleave
ppp multilink group 1
ppp multilink fragment delay 20
service-policy output Voice-QOS
ip rtp header-compression iphc-format
!
!
interface FastEthernet0/1/0
spanning-tree portfast
service-policyoutput AutoQoS-Policy-Trust
!
interface FastEthernet0/1/1
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
!
interface Serial0/2/0
bandwidth 512
no ip address
ip pim sparse-dense-mode
encapsulation ppp
no ip mroute-cache
load-interval 30
ppp multilink
ppp multilink group 1
!
!
ip access-list extended SIGNALING
permit tcp any any range 2000 2002
permit tcp any any eq 1859
permit tcp any any eq 1659
permit tcp any any range 2427 2428
permittcp any any eq 2727
permit tcp any any eq 1300
permit tcp any any range 1718 1720
permit tcp any any range 11000 11999
permit udp any anyeq 1300
permit udp any any range 1718 1720
permit udp any any range 2427 2428
permit tcp any range 2000 2002 any
permit tcp any eq 1859 any
permit tcp any eq 1659 any
permit tcp any range 2427 2428 any
permit tcp any eq 2727 any
permit tcp any eq 1300 any
permit tcp any range 1718 1720 any
permit tcp any range 11000 11999 any
permit udp any eq 1300 any
permit udp any range 1718 1720 any
permit udp any range 2427 2428 any
permit udp any any eq 11720
permit udp any eq 11720 any
ip access-list extended VOICE
permit udp any range 16384 32767 anyrange 16384 32767
!
and the HQ router has the following running c3640-is-mz.122-1a.bin IOS:
class-map match-any VoIP_Control_X
match ip dscp 24
match ip dscp 26
!
class-map match-any VOIP_Bearer_X
match ip dscp 46
!
policy-map Voice-QOS_X
class VoIP_Control_X
bandwidth 26
class VOIP_Bearer_X
priority 160
class class-default
fair-queue
!
interface Multilink4
description Link to X
bandwidth 512
ip address x.x.x.y 255.255.255.252
no ip route-cache cef
ip tcp header-compression iphc-format
no ipmroute-cache
service-policy output Voice-QOS_X
no cdp enable
ppp multilink
ppp multilink fragment-delay 20
ppp multilink interleave
multilink-group 4
ip rtp header-compression iphc-format
!
Any ideas???
Thnx
Lemon
-----------------------------------------
Disclaimer:
This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the
designated addressee(s) named above only. If you are not the
intended addressee, you are hereby notified that you have received
this communication in error and that any use or reproduction of
this email or its contents is strictly prohibited and may be
unlawful. If you have received this communication in error, please
notify us immediately by replying to this message and deleting it
from your computer. Thank you.
| |
| Matt Slaga \(US\) 2007-01-30, 1:11 pm |
| I would suggest disabling rtp header compression to see if the
intermittent problem goes away.
-----Original Message-----
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Ryan Ratliff
Sent: Tuesday, January 30, 2007 9:58 AM
To: lemon@lemon.za.net
Cc: cisco-voip@puck.nether.net
Subject: Re: [cisco-voip] Loss of RTP
When you put someone on hold and resume them it sets up an entirely
new RTP stream (different ports, etc).
If the users hit the i or ? button on the IP phone twice it will
bring up packet counters for the current call. Have them do this
when the problem occurs and note whether the Rx counters are
incrementing for the phone that cannot hear anything. That will give
you a clue where to look.
-Ryan
On Jan 30, 2007, at 9:19 AM, Lemon wrote:
Hi,
Got remote site with 2801 and 6 users. When these users phone HQ over
the WAN they sometimes loose the audio (remote site can't hear HQ but
HQ can still hear remote site) and this happens intermittent. Funny
thing is that if remote site puts HQ user on hold when there is no
audio nad take them off hold - normal audio works both ways again.
All other Remote sites does not have this problem. Remote site 2801
has following config running c2801-ipvoice-mz.124-4.T5.bin IOS:
voice-card 0
!
!
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
h323
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
interface Multilink1
bandwidth 512
ip address x.x.x.x 255.255.255.252
ip tcp header-compression iphc-format
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink interleave
ppp multilink group 1
ppp multilink fragment delay 20
service-policy output Voice-QOS
ip rtp header-compression iphc-format
!
!
interface FastEthernet0/1/0
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
interface FastEthernet0/1/1
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
!
interface Serial0/2/0
bandwidth 512
no ip address
ip pim sparse-dense-mode
encapsulation ppp
no ip mroute-cache
load-interval 30
ppp multilink
ppp multilink group 1
!
!
ip access-list extended SIGNALING
permit tcp any any range 2000 2002
permit tcp any any eq 1859
permit tcp any any eq 1659
permit tcp any any range 2427 2428
permit tcp any any eq 2727
permit tcp any any eq 1300
permit tcp any any range 1718 1720
permit tcp any any range 11000 11999
permit udp any any eq 1300
permit udp any any range 1718 1720
permit udp any any range 2427 2428
permit tcp any range 2000 2002 any
permit tcp any eq 1859 any
permit tcp any eq 1659 any
permit tcp any range 2427 2428 any
permit tcp any eq 2727 any
permit tcp any eq 1300 any
permit tcp any range 1718 1720 any
permit tcp any range 11000 11999 any
permit udp any eq 1300 any
permit udp any range 1718 1720 any
permit udp any range 2427 2428 any
permit udp any any eq 11720
permit udp any eq 11720 any
ip access-list extended VOICE
permit udp any range 16384 32767 any range 16384 32767
!
and the HQ router has the following running c3640-is-mz.122-1a.bin IOS:
class-map match-any VoIP_Control_X
match ip dscp 24
match ip dscp 26
!
class-map match-any VOIP_Bearer_X
match ip dscp 46
!
policy-map Voice-QOS_X
class VoIP_Control_X
bandwidth 26
class VOIP_Bearer_X
priority 160
class class-default
fair-queue
!
interface Multilink4
description Link to X
bandwidth 512
ip address x.x.x.y 255.255.255.252
no ip route-cache cef
ip tcp header-compression iphc-format
no ip mroute-cache
service-policy output Voice-QOS_X
no cdp enable
ppp multilink
ppp multilink fragment-delay 20
ppp multilink interleave
multilink-group 4
ip rtp header-compression iphc-format
!
Any ideas???
Thnx
Lemon
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
-----------------------------------------
Disclaimer:
This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the
designated addressee(s) named above only. If you are not the
intended addressee, you are hereby notified that you have received
this communication in error and that any use or reproduction of
this email or its contents is strictly prohibited and may be
unlawful. If you have received this communication in error, please
notify us immediately by replying to this message and deleting it
from your computer. Thank you.
| |
| Linsemier, Matthew 2007-01-30, 7:12 pm |
| What kinds of phones and phone loads are you using? I ran into a bug
like this a while back that was resolved by upgrading the phone loads.
I will see if I can scare up the Bug ID.
Matt
________________________________
From: cisco-voip-bounces@puck.nether.net
[mailto:cisco-voip-bounces@puck.nether.net] On Behalf Of Lemon
Sent: Tuesday, January 30, 2007 9:20 AM
To: cisco-voip@puck.nether.net
Subject: [cisco-voip] Loss of RTP
Hi,
Got remote site with 2801 and 6 users. When these users phone HQ over
the WAN they sometimes loose the audio (remote site can't hear HQ but HQ
can still hear remote site) and this happens intermittent. Funny thing
is that if remote site puts HQ user on hold when there is no audio nad
take them off hold - normal audio works both ways again. All other
Remote sites does not have this problem. Remote site 2801 has following
config running c2801-ipvoice-mz.124-4.T5.bin IOS:
voice-card 0
!
!
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
!
voice service voip
h323
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
!
interface Multilink1
bandwidth 512
ip address x.x.x.x 255.255.255.252
ip tcp header-compression iphc-format
no ip mroute-cache
no cdp enable
ppp multilink
ppp multilink interleave
ppp multilink group 1
ppp multilink fragment delay 20
service-policy output Voice-QOS
ip rtp header-compression iphc-format
!
!
interface FastEthernet0/1/0
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
interface FastEthernet0/1/1
spanning-tree portfast
service-policy output AutoQoS-Policy-Trust
!
!
interface Serial0/2/0
bandwidth 512
no ip address
ip pim sparse-dense-mode
encapsulation ppp
no ip mroute-cache
load-interval 30
ppp multilink
ppp multilink group 1
!
!
ip access-list extended SIGNALING
permit tcp any any range 2000 2002
permit tcp any any eq 1859
permit tcp any any eq 1659
permit tcp any any range 2427 2428
permit tcp any any eq 2727
permit tcp any any eq 1300
permit tcp any any range 1718 1720
permit tcp any any range 11000 11999
permit udp any any eq 1300
permit udp any any range 1718 1720
permit udp any any range 2427 2428
permit tcp any range 2000 2002 any
permit tcp any eq 1859 any
permit tcp any eq 1659 any
permit tcp any range 2427 2428 any
permit tcp any eq 2727 any
permit tcp any eq 1300 any
permit tcp any range 1718 1720 any
permit tcp any range 11000 11999 any
permit udp any eq 1300 any
permit udp any range 1718 1720 any
permit udp any range 2427 2428 any
permit udp any any eq 11720
permit udp any eq 11720 any
ip access-list extended VOICE
permit udp any range 16384 32767 any range 16384 32767
!
and the HQ router has the following running c3640-is-mz.122-1a.bin IOS:
class-map match-any VoIP_Control_X
match ip dscp 24
match ip dscp 26
!
class-map match-any VOIP_Bearer_X
match ip dscp 46
!
policy-map Voice-QOS_X
class VoIP_Control_X
bandwidth 26
class VOIP_Bearer_X
priority 160
class class-default
fair-queue
!
interface Multilink4
description Link to X
bandwidth 512
ip address x.x.x.y 255.255.255.252
no ip route-cache cef
ip tcp header-compression iphc-format
no ip mroute-cache
service-policy output Voice-QOS_X
no cdp enable
ppp multilink
ppp multilink fragment-delay 20
ppp multilink interleave
multilink-group 4
ip rtp header-compression iphc-format
!
Any ideas???
Thnx
Lemon
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