Author Topic: SIP Trunking - ptime  (Read 3089 times)

Offline Hershel

  • Full Member
  • ***
  • Posts: 154
  • Country: ca
  • Karma: +1/-0
    • View Profile
SIP Trunking - ptime
« on: April 04, 2016, 01:30:20 PM »
Just installed SIP trunking from a new carrier on a 5000 V6.1

Incoming is working perfect, outgoing works with the exception of specific numbers, where we are seeing a 488 error "Not Accepted Here" 

Seems like a carrier issues to me but they have asked us to change the ptime setting from 30 to 20

v=0
o=Mitel-5000-ICP 35394288 1459783486 IN IP4 172.22.32.50
s=SIP Call
c=IN IP4 172.22.32.50
t=0 0
m=audio 6186 RTP/AVP 0 8
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=ptime:30
a=maxptime:30
a=cdsc:1 image udptl t38


I don't have a clue how this is done or why it would make a difference. 


Offline acejavelin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4100
  • Country: us
  • Karma: +133/-0
  • High-tech, heavy metal redneck!
    • View Profile
    • Like what I do and wanna help out? Send me a donation!
Re: SIP Trunking - ptime
« Reply #1 on: April 04, 2016, 07:09:07 PM »
`ptime` in Packetization Time, this is in IP Call Configuration, I think it is called Minimum Playback Time (going from memory, could be wrong).

Offline Hershel

  • Full Member
  • ***
  • Posts: 154
  • Country: ca
  • Karma: +1/-0
    • View Profile
Re: SIP Trunking - ptime
« Reply #2 on: April 04, 2016, 07:25:26 PM »
Just an update after speaking with Mitel tech support
ptime = payload time

The ptime is set under the IP Call Configuration but it is referred to as Audio Frames/IP Packet.  Each frame is 10sec of audio so setting the Audio Frame to 2 = 20ms ptime


Offline acejavelin

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4100
  • Country: us
  • Karma: +133/-0
  • High-tech, heavy metal redneck!
    • View Profile
    • Like what I do and wanna help out? Send me a donation!
Re: SIP Trunking - ptime
« Reply #3 on: April 04, 2016, 08:53:47 PM »
I was close... that counts right? :)


 

Sitemap 1 2 3 4 5 6 7 8 9 10