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the IOS MOH using Cisco SRST not kicking off

followed the instructions in the" Integrating Cisco callmanager and Cisco SRST to use Cisco SRST as a Multicast MOH source "

If I allow the multicast packets to go accross the WAN it is working. when I reduce the hops to 2 and configure the router as the above document.

when i put a user on hold, they do not hear the tones, but also do not hear the MOH. see output below:

The router is not starting the streaming of the MOH packets.

ECHR1#sh call-ma

CONFIG (Version=3.3)

=====================

Version 3.3

For on-line documentation please see:

www.cisco.com/univercd/cc/td/doc/product/access/ip_ph/ip_ks/index.htm

ip source-address 172.16.22.253 port 2000

max-ephones 64

max-dn 96

max-conferences 8 gain -6

dspfarm units 0

dspfarm transcode sessions 0

huntstop

moh moh1005-188.ulaw.wav

time-format 24

date-format dd-mm-yy

timezone 0 Greenwich Standard Time

keepalive 30

timeout interdigit 10

timeout busy 10

timeout ringing 180

caller-id name-only: enable

Limit number of DNs per phone:

7910: 2

7935: 2

7936: 36

7940: 2

7960: 36

7970: 36

Log (table parameters):

max-size: 150

retain-timer: 15

multicast moh 239.1.1.1 port 16384

local directory service: enabled.

ECHR1#sh ephone sum

Max 64, Registered 0, Unregistered 0, Deceased 0, Sockets 0

ephone_send_packet process switched 0

Max Conferences 12 with 0 active (8 allowed)

Skinny Music On Hold Status

Active MOH clients 0 (max 720), Media Clients 0

File moh1005-188.ulaw.wav type WAVE Media_Payload_G711Ulaw64k 160 bytes

Moh multicast on 239.1.1.1 port 16384 via 172.16.22.253

ECHR1#

9 REPLIES
New Member

Re: the IOS MOH using Cisco SRST not kicking off

If I am not mistaken you need to set the hops to 1. Also, there is abug where you need to fail the router over to SRST and back again sometimes before it takes effect.

New Member

Re: the IOS MOH using Cisco SRST not kicking off

place a call on hold and issue the command

show ccm-manager music

verify that the multicast address is the same as in your config. If not change it to match the one you see from the output of the show ccm-manager music

New Member

Re: the IOS MOH using Cisco SRST not kicking off

I had the same problem. When I do a show ccm music, there is no active multicast session,but I am calling between ip phones within the same region. But my phone shows I am receiving packet.

My phone and MOH server are in the same region using G711.

Any idea?

Hall of Fame Super Silver

Re: the IOS MOH using Cisco SRST not kicking off

Are you talking about streaming MOH while in SRST mode or while CCM is active, or do you have CCME?

For SRST the MOH between IP phones is not supported, you will never hear MOH from flash while in SRST between 2 Ip phones, only PSTN caller will hear the music.

CCME similarly to SRST does not support MOH between IP phones. From http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_configuration_guide_chapter09186a00805abba7.html#wp1056550

"MOH is not played to local Cisco Unified CME phones that are on hold with other Cisco Unified CME phones; these parties hear a periodic repeating tone instead."

Please rate all helpful posts!

Chris

Re: the IOS MOH using Cisco SRST not kicking off

He could be using SRST mmoh as a local/branch source for moh.

A la..

Integrating Cisco CallManager and Cisco SRST to Use Cisco SRST As a Multicast MOH Resource

http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps5207/products_feature_guide09186a00802d1c31.html

If you hear nothing, it sounds to me like the MRGL is set correctly for mmoh, otherwise you should hear comfort beeps. The phone begins to listen for the mmoh stream by doing an igmp join for the group CCM tells it to. But since it has no way to verify the content of the multicast traffic, it just plays what it hears - which is nothing.

So here's a few things to confirm:

When you see the moh packet coming to the phone, dst.ip is it? 239.1.1.1? Is it the same as configured in SRST?

What multicast IP configuration is set in CCM for that server? It should be the same as the SRST gateway with Increment Multicast on IP Address set.

If you see no multicast traffic at the phone:

Are the L2 switches configured with IGMP enabled?

Has ip pim dense-mode been applied to the ethernet interface connected to the phones' vlan?

You could also specify the interface(s) you want to stream. For example,

ip multicast-routing

int gig0/0

description Voice Vlan

ip address x.x.x.x 255.255.255.0

ip pim dense-mode

call-manager-fallback

multicast moh 239.1.1.1 port 16384 route x.x.x.x

Re: the IOS MOH using Cisco SRST not kicking off

the fix for my original problem was the port for some reason the gateway was using 16392 instead of 16384, once I changed that it all worked.

Anonymous
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Re: the IOS MOH using Cisco SRST not kicking off

Anonymous
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Re: the IOS MOH using Cisco SRST not kicking off

Anonymous
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Re: the IOS MOH using Cisco SRST not kicking off

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