This document provides configuration information that is useful when connecting a Ribbon Session Border Controller (SBC) Core with Microsoft Skype for Business 2015 (SfB 2015) and Virgin Media SIP Trunk. This Application Note is a configuration guide for the Ribbon SBC 5XX0 Series (Session Border Controller) also covering SBC7XX0.
The interoperability compliance testing focuses on verifying inbound and outbound call flows between a Ribbon Core SBC and Microsoft Skype for Business 2015 (SfB 2015).
This technical document is intended for telecommunication engineers configuring the Ribbon SBC Core aspects of the Virgin Media SIP trunk group with the SfB 2015. This configuration requires access to a third-party server and the Ribbon SBC Web browser user interface, Embedded Management Application (EMA). Understanding the basic concepts for IP/Routing, SIP, RTP and TLS are also required for completing the configuration and any necessary troubleshooting.
The sample configuration (see Topology) includes the following equipment and software:
Requirements
Equipment | Software Version | |
---|---|---|
Ribbon Communications | Ribbon SBC Core (5200) | V07.01.00-R000 |
Third-party Equipment | Skype for Business 2015 | 16.0.4288.1000 |
Polycom CX500-Rev5 | 4.0.7577 | |
Polycom CX600-Rev5 | 4.0.7577 | |
Venta Fax & Voice | 7.6.234 | |
Minicom | 8000 | |
Cisco SPA-3102 | 5.2.13(GW002) |
The following reference configuration illustrates the connectivity between the third-party equipment and the Ribbon SBC Core.
Topology
For any questions regarding this document or the content herein, please contact your maintenance and support provider.
Select Topology Builder > Shared Components > PSTN Gateways
Define a new IP/PSTN Gateway
Define FQDN
Define Root Trunk
Select Control Panel > Voice Routing > Voice Policy
Voice Policy
Select Control Panel > Voice Routing > Voice Policy > New PSTN Usage
New PSTN Usage
Select Control Panel > Voice Routing > Route
Voice Routing
Select Control Panel > Voice Routing > Trunk Configuration
Trunk Configuration
Edit Trunk Configuration
The follow configuration applies to both 5xxx and 7xxx series Core SBC.
S.No | Procedure | Observation | Result | Comment |
---|---|---|---|---|
IOP1 | Vendors eSBC response to SIP OPTIONS messages from SBC | No calls are required for this test. SIP trace to be captured for approx 60 seconds and checked for correct signaling. For each eSBC, the SBC will periodically send an OPTIONS request to the vendors eSBC to check if its SIP stack is reachable. If a SIP response 200 OK is received from the IP-PBX, the SIP trunk will be placed (or remain) in an In-Service state e.g. OPTIONS sip:ping@<ip-pbx_IP_Addr>:5060 SIP/2.0 | Pass | |
IOP2 | SBC response to SIP OPTIONS messages from vendor eSBC | No calls are required for this test. SIP trace to be captured for approx 60 seconds (depending on agreement) and checked for correct signaling. Vendors eSBC setup for Solution IP.Addr Mode Check that the eSBC can simultaneously send SIP OPTIONS messages to both the solution SBC addresses. | Pass | |
IOP4 | Basic test call from IP-PBX to PSTN line through SBC-A (using SBC-A IPV4 ip address). | IP-PBX line initiates call, Call is answered, IP-PBX line terminates call. Vendors eSBC setup for Solution IP.Addr Mode Check the wireshark trace and confirm that G.711 A law codec with 10 or 20ms packetisation is being used. | Pass | |
IOP5 | Basic test call from IP-PBX to PSTN line through SBC-B (using SBC-B IPV4 ip address) Vendor to configure eSBC so that it used secondary SBC (SBC_B) for this test. | IP-PBX line initiates call, Call is answered, IP-PBX line terminates call. Vendors eSBC setup for Solution IP.Addr Mode Check the wireshark trace and confirm that G.711 A law codec with 10ms or 20ms packetisation is being used. | Pass | |
IOP7b | Called Number format - vendors eSBC to soft switch number normalization - Global Dial Plan Test eSBC capability to send the called number in one of the following Global number formats (user part of Request & To URIs) 0yyyyyyyyyy (where y refers to any number, calling party = national) | SBC to be configured for Global calling plan. IP-PBX line initiates call to PSTN line, Call is answered. Configure the eSBC to present the called number in the user part of the Request & To URIs to be sent in one of the following formats 0yyyyyyyyyy (where y refers to any number, calling party = national) | Pass | |
IOP8b | Calling Number format - vendors eSBC to soft switch number normalization - Global Dial Plan Test eSBC capability to send calling number in one of the following Global number formats (user part of FROM & PAI URIs) 0yyyyyyyyyy (where y refers to any number, calling party = national) | SBC to be configured for Global calling plan. IP-PBX line initiates call to PSTN line, Call is answered. Configure the eSBC to present the calling number in the user part of the From & PAI URIs to be sent in one of the following formats 0yyyyyyyyyy (where y refers to any number, calling party = national) | Pass | |
IOP9b | Called Number format - soft switch to eSBC number normalization - Global Dial Plan Test eSBC capability of accepting the called number in one of the following Global number formats (user part of Request & To URIs) +44yyyyyyyyy (where y refers to any number, calling party = national) | SBC to be configured for Global calling plan. PSTN line initiates call to IP-PBX line, Call is answered. Configure the eSBC to accept the called number in the user part of the Request & To URIs in one of the following formats +44yyyyyyyyy (where y refers to any number, calling party = national) Also check to see that the INVITE contains Session-Expires header and that it is syntactically correct. Check for Supported Header and ensure 'timer' is supported. Ensure response in 200 OK is compatible with INVITE and check for Required Header and if it contains 'timer'. | Pass | |
IOP10b | Calling Number format - soft switch to eSBC number normalization - Global Dial Plan Test eSBC capability of accepting the calling number in one of the following Global number formats (user part of FROM & PAI URIs) +44yyyyyyyyy (where y refers to any number, calling party = national) | SBC to be configured for Global calling plan. PSTN line initiates call to IP-PBX line, Call is answered. Configure the eSBC to accept the calling number in the user part of the Request & To URIs in one of the following formats +44yyyyyyyyy (where y refers to any number, calling party = national) | Pass | |
IOP11 | Emergency Call Handling -IP-PBX Line to PSTN - UK Emergency call 999 | Call made from IP-PBX line to the Emergency services using 999. Call answered. | Pass | |
IOP12 | Emergency Call Handling -IP-PBX Line to PSTN - UK Emergency call 112 | Call made from IP-PBX line to the Emergency services using 112. Call answered, | Pass | |
IOP13 | Emergency Call Handling -IP-PBX Line to PSTN - UK Emergency call 18000 - Text Direct | Call made from IP-PBX line using a text direct set to the Emergency services using 18000. Call answered. | Pass | |
IOP14 | IP-PBX Line to PSTN - call answer - Originator disconnect | Call made from IP-PBX line to PSTN line, Answer Call. | Pass | |
IOP15 | PSTN calls SIP #1, SIP #1 conferences in SIP #2 | Call made from IP-PBX line to PSTN line, Answer Call. | Pass | |
IOP16 | IP-PBX Line to PSTN - Busy subscriber | Call made from IP-PBX line to a busy PSTN line (without divert on busy) | Pass | |
IOP17 | IP-PBX Line to PSTN - No answer timeout test | Call made from IP-PBX line to a PSTN line (without divert on no answer) | Pass | Cancel message is sent by SfB 2015 server and there is not an option to change the timer for this. |
IOP18 | IP-PBX Line to PSTN - Subscriber not reachable Vendor to call 01189111111 | Call made from IP-PBX line to an invalid number. | Pass | |
IOP19 | PSTN Line to IP-PBX - call answer - Originator disconnect. | Call made from a PSTN line to an IP-PBX line, Answer Call. | Pass | . |
IOP20 | PSTN Line to IP-PBX - call answer - Terminator disconnect | Call made from a PSTN line to an IP-PBX line, Answer Call. | Pass | |
IOP21 | PSTN Line to IP-PBX - busy subscriber | Call made from PSTN line to a busy IP-PBX line (without divert on busy) | NoExec | SfB 2015/Lync does not support Busy line due to a permanent call waiting service. If a UM/Voicemail service is activated call goes there. |
IOP22 | PSTN Line to IP-PBX - No answer timeout test, Invoked by PBX | Call made from a PSTN line to an IP-PBX line (without divert on no answer) Wait for the IP-PBX to return no answer timeout response | Pass | |
IOP23 | PSTN Line to IP-PBX - subscriber not reachable | Call made from a PSTN line to an invalid number/unprogrammed DDI on the IP-PBX. | Pass | |
IOP24 | Verify CLIP service on IP-PBX line (incoming call from PSTN) | Call made from PSTN line to IP-PBX line. PSTN line is set to allow CLI presentation. | Pass | |
IOP25 | Verify CLIR service on IP-PBX line (incoming call from PSTN) | Call made from PSTN line to IP-PBX line. PSTN line is set to restrict CLI presentation. | Pass | |
IOP26 | Verify CLIP service on PSTN line (outgoing call from IP-PBX, From) | Ensure number used in From header is agreed with Virgin Media and entered into the soft switch database for screening purposes. Call made from an IP-PBX line to a PSTN line. Ensure that the eSBC allows presentation of its CLI using privacy-header (Privacy: none or privacy-header not present) Ensure that the expected CLI is presented to the PSTN line. | Pass | |
IOP27 | Verify CLIP service on PSTN line (outgoing call from IP-PBX, PAI/PPI) Vendor to ensure PAI number is different to that from which the call originates | Ensure number used in PAI/PPI header is agreed with Virgin Media and entered into the soft switch database for screening purposes. Call made from an IP-PBX line to a PSTN line. Ensure that the expected CLI is presented to the PSTN line. | Pass | |
IOP28 | Verify CLIR service on PSTN line (outgoing call from IP-PBX) | Ensure number used in From/PAI header is agreed with Virgin Media and entered into the soft switch database for screening purposes. Call made from an IP-PBX line to a PSTN line. Ensure that the eSBC restricts presentation of its CLI using privacy-header (Privacy: id or Privacy: user or Privacy: user;id) Ensure that CLI is NOT presented to the PSTN line. | Pass | |
IOP29 | Verify Call Forward Immediate (unconditional) on a IP-PBX line (Incoming call from PSTN, call forward terminates within IP-PBX) | Call made from a PSTN line to an IP-PBX line with call forward to a line within the same IP-PBX, Answer Call. Does the IP-PBX have configuration settings to send SIP status 181 messages to the soft switch? | Pass | |
IOP30 | Verify Call Forward Immediate (unconditional) on a IP-PBX line (Incoming call from PSTN, call forward terminates PSTN) | Call made from a PSTN line to an IP-PBX line with call forward to a line in the PSTN, Answer Call. | Pass | |
IOP31 | Verify Call Forward Busy on IP-PBX line (Incoming call from PSTN, call forward terminates within IP-PBX) | Call made from a PSTN line to an IP-PBX line with Call Forward Busy (or equivalent) to a line within the IP-PBX, Answer Call. | Pass | |
IOP32 | Verify Call Forward No-answer on IP-PBX line (Incoming call from PSTN, call forward terminates within IP-PBX) | Call made from a PSTN line to an IP-PBX line with Call Forward No-answer (or equivalent) to a line within the IP-PBX, Answer Call. | Pass | |
IOP33 | Verify Call Hold Service on IP-PBX (Incoming call from PSTN) | Call made from a PSTN line to an IP-PBX line with Call Hold, Answer call. | Pass | |
IOP34 | Verify 3-party conference service on IP-PBX (Incoming call from PSTN, 3rd party within IP-PBX) | Call made from a PSTN line to an IP-PBX line with 3-party conference, Answer call. | Pass | Conference is created on the SfB 2015 server as another room/place where all other users are connected. All users must release the call to be disconnected from this conference call. |
IOP35 | Verify 3-party conference service on IP-PBX (Incoming call from PSTN, 3rd party PSTN) | Call made from a PSTN line to an IP-PBX line with 3-party conference, Answer call. | Pass | Conference is created on the SfB 2015 server as another room/place where all other users are connected. All users must release the call to be disconnected from this conference call. |
IOP36 | Verify do-not-disturb service on IP-PBX line (Incoming call from PSTN) | Does not ring Record the SIP status received from IP-PBX | Pass | |
IOP37 | Verify Call park service on IP-PBX line (Incoming call from PSTN) | Call made from a PSTN line to IP-PBX line A with Call Park (or equivalent) feature active, Answer call. | Pass | |
IOP38 | Verify Call Waiting on an IP-PBX line, involving a PSTN line | Call made from PSTN line A to an IP-PBX line with Call Waiting active, Answer call. | Pass | |
IOP39 | Verify DTMF transmission from/to IP-PBX - Inband | Configure the IP-PBX/eSBC to send DTMF transmission in-band. Call made from IP-PBX line to a PSTN line, Answer call. Was the received DTMF tone reflective the length of time the key was pressed? | Pass | |
IOP40 | Verify DTMF transmission from/to IP-PBX - RFC 2833 - telephone-event | Configure the IP-PBX/eSBC to send DTMF transmission using RFC 2833 - telephone-event. Call made from IP-PBX line to a PSTN line, Answer call. Was the received DTMF tone reflective the length of time the key was pressed? | Pass | |
IOP41 | T.38 Fax transmission mode - PSTN to IP-PBX origination | Configure the ATA/IP-PBX/eSBC such that Fax transmission is sent using T.38 Version 0 Fax transmission mode. Ensure Wireshark trace shows that T.38 Fax Transmission is used. Check that the fax is transmitted and received as expected. | Pass | |
IOP42 | T.38 Fax transmission mode - IP-PBX to PSTN origination | Configure the ATA/IP-PBX/eSBC such that Fax transmission is sent using T.38 Version 0 Fax transmission mode. Ensure Wireshark trace shows that T.38 Fax Transmission is used. Check that the fax is transmitted and received as expected. | Pass | |
IOP43 | In-band G.711 Fax transmission mode - PSTN to IP-PBX origination | Configure the ATA/IP-PBX/eSBC such that Fax transmission is sent using in-band G.711 Fax transmission mode. Ensure Wireshark trace shows that in-band G.711 Fax Transmission is used. Check that the fax is transmitted and received as expected. | Pass | |
IOP44 | In-band G.711 Fax transmission mode - IP-PBX to PSTN origination | Configure the ATA/IP-PBX/eSBC such that Fax transmission is sent using in-band G.711 Fax transmission mode. Ensure Wireshark trace shows that in-band G.711 Fax Transmission is used. Check that the fax is transmitted and received as expected. | Pass | |
IOP45 | Test of Call in progress audit function (response to in-call OPTIONS from soft switch to eSBC) & session refresh & response to UPDATE messages. | Call made from an IP-PBX line to a PSTN line, Answer call. Check wireshark trace to ensure that in-call OPTIONS are sent by the soft switch and that the eSBC responds with status 200OK. | Pass | |
IOP46 | Test of 4 simultaneous calls, 2 inbound, 2 outbound calls Vendor to configure eSBC for Round robin to ensure calls go to both Primary and secondary SBC | Configure the eSBC such that successive calls route to alternate SBCs (round robin, cyclic etc). | Pass | |
IOP47 | Test of eSBC endpoint restart-recovery | Restart the eSBC and ensure that, after recovery, inbound and outbound calls are successful. | Pass | |
IOP48 | Test of eSBC loss of Ethernet link and reconnection | Remove the Ethernet link between the eSBC and CE router. Leave in this condition for at least 3 minutes. Reconnect the Ethernet link and ensure that after approx 2 minutes inbound and outbound calls are successful. | Pass | |
IOP49 | Test of Primary SBC loss | ** Contact MSL engineer to carry out the following ** Call made from IP-PBX line to a PSTN Line. ** Contact MSL engineer to carry out the following ** | Pass |
These Application Notes describe the configuration steps required for Ribbon SBC Core to successfully interoperate with Skype for Business 2015 and Virgin Media SIP Trunk. All feature and serviceability were completed with the exceptions/observations noted in.
Select Control Panel > Voice Routing > Trunk Configuration
IOP28