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Distorted MOH on external calls only IPX2400

Distorted MOH on external calls only IPX2400

Distorted MOH on external calls only IPX2400

(OP)
There is an IPX 2400 with MOH issue. Internal calls station-to-station, music is fine. This system is connected to another 9500, via a TDM "tie" line. I think it's using a 24PRT card for that. It might be a TDM CCIS connection - I'm not sure. Calls between the 2 systems are fine, and MOH coming from the IPX is totally fine too.

However all calls in and out of Telco have a lower volume, and the MOH coming from the IPX to other party via Telco is distorted. The speech is fine, you can hear both party clearly, with no noise or distortion, but definitely with less volume. I was at the 9500 side of their link, and someone called me via this link and it was nice, loud and clear, and music was too. Then they called me on the same phone, but now via the Telco. I heard the person just fine, clear, but with noticably lower volume. The volume of MOH is very low and the music get lost (you can sort of hear it) in some distorted noise. It's not staticky sound, it's not some lose connection. Telco brings in voice and data via fiber, into a router that has a PRI port. That PRI port connects to the IPX, to its PRI card.

I'm new to the site, and nobody can tell me if there was any change and if this problem is something new or existed all along, and just nobody cared before. Fact is, now they care about it.

The person on site started playing around with the dip switches on the card (24PRTB card to Telco), switch 5, element 1-2-3, but noticed no difference on test calls. The whole system is TDM.

If anybody has ideas, please share.

RE: Distorted MOH on external calls only IPX2400

If you have redundant time division, switch over and retest.
It would help if you knew exactly what you have, PRI/CCIS?
I believe there are settings to determine which side provides MOH. Probably in ASYD.
Lastly, you may have some attenuation from the card. Again switch settings on the card may need to be adjusted. Also in ARTD. Since you don't know if this was that way from initial install, it's hard to determine if any hardware is to blame, or bad from day one.

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