Problems dialling out on faxes and modems

[redwinner]

I have just replaced a siemens system with S8710 running 2 ESS sites and 3 LSP S8300/G700. After the Avaya system went in the customer is complaining of not being able to dial out on modems and Faxes dialling out intermittently. Does anyone know what the recommended levels, settings and parameters should be. This system is in the UK.
Thanks

 

[letman]

check your synchronization. You should get your timing from one of you pri's.

 

[mrjedi]

check your ip-codec-set settings on page 2

 

[avayafreakje]

check your firmware release on the analog board

 

[stlouis1]

We almost never have fax problems - we use the codec set setting of fax relay. We had problems with modems on ACM 1.3 to ACM 2.1. On ACM 2.2 and ACM 3.x we find the best modem results with the codec set setting of modem pass through - but you'll only get consistent results to 9.6k or 14.4k only. Each G700 box is afree running device so for best modem performance try to get a good stratum T-1 in every G700 that a modem is attached to.

 

[johnnydialtone]

We had problems with firmware on the medpros when we went to 3.0. Analog and IP doesn't always play nice.

 

[redwinner]

Thanks for all the help, I've managed to stabalise things by making sure the modem setting on ip-codec-set was set to pass-through.