QOS problem calling from Ip phone to E1.

[AvayaEng]

Hi

Have an IP phone 4601 on an G250 registered to an G700+S8300. When I call another IP phone in a different location the QOS is fine. When I brake out to the PSTN via the G700. I get very bad GOS. all my IP-Codec-sets arre G729A. the VoIP on the G700 is using G729 [001V148:RX:196.34.184.203:16228/g729/20ms] and the Ip port od the phone is using G729A [S00021:TX:10.3.1.210:6180/g729a/20ms] Please can any one advise. I have test the Link to the PSTN using a Trend analyzer and there is no voice quaility issues.

See status station below:
AUDIO CHANNEL
Port: S00021
Switch IP IP
Port Other-end IP Addr ort Set-end IP Addrort
G.729A Audio: 1 196. 34.184.203 :16228 10. 3. 1.210:6180
Node Name:
Network Region: 1 6
Audio Connection Type: ip-tdm

Port: S00021 Shared Port:
Product ID and Release: IP_Phone 2. 0
H.245 Tunneled in Q.931? does not apply
Registration Status: registered-authenticated
MAC Address: 00:04:0d:4c:00:71
Native NAT Address: not applicable
Authentication Type: DES-56-plus

Page 5 of 6
SRC PORT TO DEST PORT TALKPATH
src port: S00021
S00021:TX:10.3.1.210:6180/g729a/20ms
001V148:RX:196.34.184.203:16228/g729/20ms TX:ctxID:227
001V224:RX:ctxID:227

 

[nohuhu]

AvayaEng,

first try to update this phone to the latest firmware. second, check if you have e1 synchronization set on the g700. and third, do you have any problems with this phone calling pstn through local g250?

 

[AvayaEng]

thanks, Okay what I have done is routed all my calls that where going to the PSTN via the G700 to an S8500 and braking out there. there is no QOd issues.

I'm not sure where to find the synchronization on a s8300 with G700.I have set up a second DS1 card in the G700 and made a call using a Trend Analyser through the "problamtic" DS1 card and the there was no QOS problems.

If I register an IP phone directly on the G700 I get no dialtone. but make calls and there is no speech.???

When making a call from and IP Phone through the G250 to the PSTN there is no QOS Problems.