Hello, everyone!
Today, I'd like to share a case with you.
Problem Description
Customer using esight-PON to deliver ONT VOIP service, test find the after dial numbers, waiting a very long time to establish the call, test multiple times confirmed after dial finish need waiting about 15~16 seconds can hear the ring back tone.
Handling Procedure
1. Confirm the esight configure ONT VOIP process,esight delivery configuration to the OLT, OLT configure the ONT VOIP service by OMCI mode;
2. Check the ONT configuration confirmed not bind with ont-digitmap-profile, and the OLT only existing the default ont-digitmap-profile, and all the ONT bind with this default ont-digitmap-profile.
HUAWEI(config)#display ont-digitmap-profile all
{ <cr>||<K> }:
Command:
display ont-digitmap-profile all
------------------------------------------------------------------------------
Profile-id Profile-name Bind times
------------------------------------------------------------------------------
1 digitmap-profile_1 23
------------------------------------------------------------------------------
Total: 1
3. Check the default digitmap dial plan is "X.L", but the long timer (partial-dial-time) settings is 16000ms, this caused after dial finish need waiting for 16s.
HUAWEI(config)#display ont-digitmap-profile profile-id 1
{ <cr>|profile-name<K>||<K> }:
Command:
display ont-digitmap-profile profile-id 1
------------------------------------------------------------------------------
profile id : 1
profile name : digitmap-profile_1
critical-dial-time : 4000ms
partial-dial-time : 16000ms
roh-time : 6s
digitmap-format : H.248
------------------------------------------------------------------------------
dial-plan-id dial-plan-token
1 X.L
------------------------------------------------------------------------------
dial-plan-number : 1
------------------------------------------------------------------------------
binding times : 23
------------------------------------------------------------------------------
Root Cause
Digit map setting as "X.L", long-timer too long.
Solution
Change the long-timer to 5s or change the digitmap dial plan to "X.S", below is an example change the long-timer to 5s.
HUAWEI(config)#ont-digitmap-profile modify profile-id 1
{ <cr>|critical-dial-time<K>|digitmap-format<K>|partial-dial-time<K>|profile-name<K>|roh-time<K> }: partial-dial-time
{ partial-dial-time-value<U><1,65535> }: 5000
{ <cr>|critical-dial-time<K>|digitmap-format<K>|roh-time<K> }:
Command:
ont-digitmap-profile modify profile-id 1 partial-dial-time 5000
HUAWEI(config)#
Summary and Suggestion
No matter using long-timer or short-timer in the digitmap, suggest do not set less than 3s, it may cause dial not finished, the ONT send out to core network device.
I hope it will be helpful for you. Thank you!
