IP Telephony and Phones

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Hello I´ll appreciate any help about this situation:CISCO3900 router with (C3900e-UNIVERSALK9-M), Version 15.1(3)T2 and VWIC3-2MFT-T1/E1 card is forming a SIP Trunk with an Asterisk PBX. Trunk is working ok,I can receive a call from PSTN through E1 c...

Resolved! Call Flow methods

Dear All, Could someone help me understand, why do I need H323 fast start, SIP early offer & SIP early media, when calls can be established with H323 slow start, SIP delay offer? How does it make difference to calls? In what scenario do these benefit...

Syed by Level 3
  • 4 replies
  • 0 Helpful votes

Hello all, One of our client is having CUCM with H.323 GW. Recently they got SIP trunk from service provider. SIP trunk will be used only for incoming calls.  Currently Incoming calls are failing with error " SIP/2.0 488 Not Acceptable Media ". From ...

Hi , New UCS 220 M4 (Business Edition Server) unable to detect RAID controller and end up with boot failure. Error Message   "Adapter at Baseport is not responding No Megaraid Adapter Installed" But When Check the RAID Adapter , Virtual disk , ...

You know how you can create a text file with a string of MAC addresses for phones and use that to search for devices and then make specific changes on them?  I'd like to be able to do that same thing for lines.  I have a list of phone numbers that ar...

refram by Level 3
  • 1 replies
  • 0 Helpful votes