Delay in voice path across SCN to Local T1 calls.

[Apexis]

We have 2 locations which are connected via an MPLS network with QOS enabled. Each local site has QOS switches and inter office calls and calls between the two offices have no problems at all. The issue is when a user from Site A dials a number local to Site B and with short codes I have the call going across the SCN to Site B and dump out their local voice T1....the user on Site A is unable to hear the first few seconds of the converstation of the called party. Example: "Hello this is Tom." The call orginator at Site A only hears: "....is Tom" and happens for nearly every call.

We basically setup every 9, xxxxxxx to go to Site B and there are only a few npa/nxx's that are local to Site A which get routed out Site A's analog lines.

Short code: [9]N;
Telephone number: N;
Line Group ID: 70 (SCN to Site B)

Site A
==================
IP406v2 3.0(69)
5620 IP Phone

Site B
==================
IP406v2 3.0(69)
T1 for local dial tone

Do we need to change a timer? A shortcode? Thanks for everyone's help!

 

[JeSTeROCK]

Have you tried turning on Enable Fast start at each end on the IP lines ? then restarting

 

[Apexis]

Already enabled on both ends.

 

[JeSTeROCK]

Are the lines setup to every site setup the same, ie same codecs and voip settings? Done the reboots ?
If not sounds like the analogue lines

 

[Apexis]

Setup on the virual line is the same on each unit. The analogue lines aren't being utilized.

User from Site A via SCN to Site B goes out Site B's T1 with the issue.

 

[Apexis]

Anyone run into this issue?