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MOH issue with remote SRST

valenciaa
Level 1
Level 1

Hi

Im having issue with MOH with onbe of the branch gateway. The MOH is working fine with internal and with incoming calls from PSTN. However its not working with ougoing call to PSTN. The person on the other line dont hear anything at all.

I notice that the Muticast address are diffrent form incomming and outgoing calls.

Incomming call to PSTN MOH (working)

Current active multicast sessions : 1
 Multicast       RTP port   Packets       Call   Codec    Incoming
 Address         number     in/out        id              Interface
===================================================================
239.1.1.1         16384   152/152          55719 g711ulaw  Lo9  

Outgoing call to PSTN (not working)

Current active multicast sessions : 1
 Multicast       RTP port   Packets       Call   Codec    Incoming
 Address         number     in/out        id              Interface
===================================================================
239.1.1.3         16384   0/0              55722   g729r8  Lo9

SRST configuration

ccm-manager music-on-hold bind Loopback9

interface Loopback9
 description ***  locally significant only for MOH ***
 ip address 192.168.9.9 255.255.255.255
 ip pim sparse-dense-mode

call-manager-fallback
 secondary-dialtone 0
 max-conferences 2 gain -6
 transfer-system full-consult
 timeouts interdigit 4
 ip source-address 10.1.1.1 port 2000
 max-ephones 55
 max-dn 105 dual-line
 sdspfarm units 2
 sdspfarm transcode sessions 2
 dialplan-pattern 1 07340966.. extension-length 4 extension-pattern 66..
 dialplan-pattern 2 340966.. extension-length 4 extension-pattern 66..
 dialplan-pattern 3 66.. extension-length 4 extension-pattern 66..
 transfer-pattern .T
 moh sibelcoJuly2013.ulaw.wav
 multicast moh 239.1.1.1 port 16384 route 192.168.9.9
 time-zone 48
 time-format 24
 date-format dd-mm-yy

IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group,
       V - RD & Vector, v - Vector
Outgoing interface flags: H - Hardware switched, A - Assert winner
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.1.1.1), 00:02:46/stopped, RP 0.0.0.0, flags: DP
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list: Null

(10.40.162.254, 239.1.1.1), 00:02:46/00:01:05, flags: P
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list: Null

(*, 239.1.1.3), 00:01:40/stopped, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Loopback9, Forward/Sparse-Dense, 00:01:40/stopped

(10.40.162.254, 239.1.1.3), 00:01:40/00:01:19, flags: L
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Loopback9, Forward/Sparse-Dense, 00:01:40/stopped

(*, 224.0.1.40), 05:25:49/00:02:50, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Loopback9, Forward/Sparse-Dense, 05:25:49/stopped

1 Reply 1

Hi,

your outgoing call is using a G.729 codec (it uses IP 239.1.1.3) ... why? Please double check your CUCM configuration for outgoing calls?

Best regards