Prerequisites:

• For Seabix, Teams integration must be enabled on the trunk and on the desired users
• Every Teams user must have at least Teams Essentials and Teams Phone Standard licensed to use the voice functionality.
• At least 1 Teams user must be activated.
• One SBC must be registered per customer tenant
• The desired numbers must be registered with the user
• The user must be assigned the necessary routing policies

Activating SBC in Teams Tenant:

• The customer must prepare the Festnetz+ domain in his tenant according to Seabix's instructions > the necessary TXT record is sent to Seabix
• Seabix configures the appropriate TXT record in the DNS system after which the customer can complete his activation
• Customer activates at least one user with Teams Essentials (or bundle) and Teams Phone Standard (or bundle)
• The following adjustments must be made in the Teams Admin Center
  • Voip > Direct Routing > SBC > +
    • Name: Festnetz+ FQDN as specified
    • Enabled: On
    • SIP signaling port: 5070
    • Send SIP options: On
    • Call forwarding history: On
    • Forward P-Asserted-Identity (PAI) header: A
    • Capacity for simultaneous calls: according to the number of trunks configured in Seabix
    • Failover response codes: 408, 503, 504
    • Failover time (seconds): 10
    • SBC supports PIDF/LO for emergency calls: no
    • Media Bypass: Off
    • Bypass mode: None
    • Preferred country for media traffic: Switzerland
    • Location-based routing: Off
    • Gateway Site ID: None
  • Voip > Direct Routing > Manage PSTN usage entries
    • Add > Value: Unrestricted
  • Voip > VoIP Routing Policies > Add
    • Name: Default voice routing policy to PSTN
    • Add/Link: PSTN Usage Entry Unrestricted

Activation of users for teams

• Teams Admin Center > Users > Select Users
  • Add phone number in international format, e.g. +41 58 670 80 90
  • In the Policies Voip Routing Policy set to Default voice routing policy to PSTN