IP Office SIP One-Way Speech 2

[raz0r05]

Hello Guys,

We have a SIP trunk set up on our IPO 500V2 but we get one way speech where by the customer calling can hear the agent but the agent can't hear the customer.

I have attached the SIP traces for reference, any assistance would be much appreciated.

 

[derfloh]

Network Topology not set up? SIP ALG in the route?

IP Office remote service
IP Office certificate check
CLI based call blocking
SCN fallback over PSTN

 

[janni78]

The call comes from an internal address, so this is the provider or an SBC?

"Trying is the first step to failure..." - Homer

 

[raz0r05]

Let me confirm if SIP ALG is enabled on the router. We have a subnet for Avaya applications i.e. IP500V2, IPO SE, AMS, and ACCS, and the subnet where the agents log into the soft phones but can access the Avaya subnet. The current set up has an E1 line which is working fine no one-way speech, but we were setting up SIP for redundancy which has one-way speech.

The call comes in from the provider directly to the 500v2, we don't have an SBC set up.

Please let me know if you require any further info.

 

[jinxs]

Like derfloh mentioned, did you set the public IP address in Network Topology in the System - (Lan1 or Lan2) - Network Topology.

Under the SIP trunk , transport tab make sure you are using the proper network topology.

 

[raz0r05]

We have no public IP configured as the provider is giving us a private IP for SIP. The current subnet for the Avaya applications is 172.168.X.X and the provider IP is 10.X.X.X.

Please see attached the LAN and IP route configurations for both LAN 1 and LAN 2.

 

[TouchToneTommy]

I see 3 IP addresses referenced in your trace

10.221.12.18
10.18.5.64
10.65.82.75

Since the route to 10.65.82.75 is 10.221.12.17 via LAN-2, can I assume that your IPO LAN2 IP is the 10.221.12.18 ?

Perhaps add a route for 10.18.5.64 to the same gateway on LAN2, otherwise your IPO is trying to return traffic via LAN1 ?

 

[raz0r05]

Thank you guys, I added 10.18.5.64 to the route and now we have two-way speech.

Your assistance is much appreciated.