How to Connect Telekom CompanyFlex Sip Trunk to P series PBX

1. SIP Trunk Settings

    1) Basic

  • Transport should choose "TCP"
  • Username is the "Registration Number"
  • Authentication name is the "Registration number + @tel.t-online.de"
  • Outbound-Proxy: is the "primary outbound proxy" which provide by Telekom

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    2) Inbound caller ID reformatting

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    3) Sip Headers

  • Get Caller ID: FROM
  • GET DID from: P-Called Party ID

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2. SIP Settings

    1) General

  • TCP protocol is required
  • SIP endpoint registration timers should be more frequency

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     2) Session Timers

  • Session Timer choose No

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P.S: If there is an issue when using CompanyFlex sip trunk on P series PBX just feel free to submit a ticket from our support portal

 

 

 

 

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1 Comments

  • 0
    Avatar

    Hi,

    It works only on a ISP connection directly from Deutsche Telekom. Calls and registration dont work good from other ISP to Deutsche Telekom.

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