SIP Trunk Service - MTN Business

o SIP Trunk over a contended connectivity must be offered as a Best Effort SIP Trunk.
o Customer must either choose a Basic SIP Trunk or an Advanced SIP Trunk.
o Value Adds can only be added to an Advanced SIP Trunk.
Codec
o MTN Business will accept G.729a, G.722, T.38, H.264 and H.263 calls. MTN Business will accept
G.711 fall back for T.38 calls.
o HD voice and video calls will not be routed outside of our network.
o HD Voice and Video calls are dependent on the type of end-point used.
o The customer must purchase Advanced SIP Trunk to route Video and HD Voice through the MTN
Business network.
Access
o The customer can use any connectivity mechanism which MTN Business provides but MTN
Business cannot guarantee voice quality in all cases.
Traffic pricing
o Please refer to the MTN SIP Trunk pricing sheet.
Media
o Customer must provide Music-on-hold or Custom Ring back media.
o Both media must have the following characteristics
• not exceed 120 seconds in length
• encoded as 8 bit A-law and mono not stereo
o Customer takes responsibility to ensure that no digital rights are being infringed by using the media.
o Customer will pay for all licenses associated with the media and provide proof of such payments.
Business Continuity
o Each SIP trunk used for business continuity is charged for separately and in addition to the primary
SIP trunk.
o Load balancing is provided for inbound calls as per the user-defined load split.
o Load balancing for outbound traffic must be applied at the on-premise equipment such as a PBX,
Enterprise SBC or a Gateway
o Business continuity to a DR site
• All incoming calls can be forwarded from the initial SIP Trunk to the DR SIP Trunk.
• The customer must purchase MPLS VPN Ports for each SIP Trunk else they will be
charged the on-net rate for every call that is forwarded.
• The flat fee for on-net calls cannot be used for Business Continuity.
Multi-Area Routing
o The customer can request multi-area routing for SIP trunk as long as they take responsibility to
ensure that the geographic number will remain within the geographic area as determined by the
E.164 number and ICASA regulations.
o MTN Business reserves the right to terminate the multi-area routing solution if the customer is
deemed to utilize the service in a manner that contravenes the ICASA regulations.
o MTN Business cannot guarantee the proper functioning of emergency numbers as the customer
controls the allocation of the geographic number.
o The customer must pass the full caller line identity for outbound calls. CLI can be “private number”
but must not be empty.
Enterprise SBC will be provided upon request only. The SBC is charged for separately.
08xx business rules
o Customer can route their inbound 08xx traffic to MTN Business PRIs under the following conditions
• Customer wants to retain their 08xx number
• Inbound traffic does not exceed 10 concurrent inbound calls
o Customer must purchase a SIP Trunk or Hosted PBX service for 08xx routing
Initials