05-29-2012 04:01 AM - edited 03-16-2019 11:23 AM
I have 2 questions regarding Music On Hold options for CME 9.0
1) Can you use unicast or is multicast the only option on CME 9.0?
2) On a L3 3750 switch running IP BASE, is it possible to deliver MOH on the Voice VLAN (SVI) utilizing PIM STUB routing?
Here is my scenario:
ISDN2 (BRI)---2921--->(L3 routed)----->3750-----(VLAN211)------IP-Phones(6941)
MOH currently not working for internal calls when put on hold
2921 running CME 9.0 (15.2.2T)
- Telephony Services source is Loopback 0
- L3 routed link to the 3750 switch
3750 running IP BASE
- SVI (interface VLAN 211 defined for L3 voice vlan)
Below is are my Multicast Configs on the 2921 router and IP BASE 3750:
ROUTER:
!
ip multicast-routing
!
telephony-service
ip source-address 10.11.10.254 port 2000
moh "flash:music-on-hold.au"
multicast moh 239.0.0.1 port 2000 route 10.11.10.254 172.21.101.22
!
interface Loopback0
description ** Loopback **
ip address 10.11.10.254 255.255.255.255
!
interface GigabitEthernet0/0
description ** switch F1/0/1 **
bandwidth 100000
ip address 172.21.101.22 255.255.255.248
ip pim sparse-dense-mode
!
SWITCH:
!
ip multicast-routing distributed
!
interface FastEthernet1/0/1
description ** router G0/0 **
no switchport
bandwidth 100000
ip address 172.21.101.17 255.255.255.248
ip pim passive
speed 100
duplex full
!
interface Vlan211
description ** VOICE **
ip address 10.10.10.254 255.255.255.0
ip pim passive
!
05-29-2012 04:05 AM
1. by default CME automatically select MoH to be multicast or unicast depending if phone is a subnet local to to CME router, or not ('remote phone').
2. as a consequence, the best choice is to have the phones be directly connected to CME router.
05-30-2012 02:35 AM
Spent most of today trying L3 vs L2 vs L3 + dot1q for voice VLAN.. Same result - when internal calls are put On Hold - silence.. Finally tried a fresh set of phones with stock firmware. Everything worked straight away!
Basically, I just found a bug in 69xx CME 9.0 firmware ver 9.2.1 (SCCP). Phones on default load 9.0.2 work fine, even with a pure L3 switch on IP Base with multicast stub.
If anynoe is interested, here is my working CME multicast L3 3750 switch config on IP BASE:
!
ip routing
!
ip multicast-routing distributed
!
interface FastEthernet1/0/1
description ** router G0/0 **
no switchport
bandwidth 100000
ip address 172.21.101.17 255.255.255.248
ip pim sparse-dense-mode
speed 100
duplex full
!
interface Vlan211
description ** VOICE **
ip address 10.10.10.254 255.255.255.0
ip pim passive
!
05-30-2012 02:43 AM
The 69xx are known to have more bugs in recent firmware rather than in the original one.
Good that you found a solution anyway.
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