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SIP Trunk, MTP and IOS Conference Resource

aalejo
Level 5
Level 5

‎09-18-2016 11:03 AM - edited ‎03-17-2019 08:07 AM

Hi

It is possible to add RFC 2833 support to IOS conference server and avoid the use of MTP resources when doing a conference over a SIP Trunk?

Alex

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5 Replies 5

Mohammed al Baqari
Level 11
Level 11

‎09-18-2016 11:44 AM

rfc2833 is supported through conference bridges without additional config. You can verify this using the command 'show sccp' as below. If you see MTP inserted then one of the endpoints isn't supporting rtp-nte (probably using sccp).

Conferencing Oper State: ACTIVE - Cause Code: NONE
Active Call Manager: 10.170.170.2, Port Number: 2000
TCP Link Status: CONNECTED, Profile Identifier: 10
Reported Max Streams: 8, Reported Max OOS Streams: 0
Supported Codec: g722r64, Maximum Packetization Period: 30
Supported Codec: g711ulaw, Maximum Packetization Period: 30
Supported Codec: g711alaw, Maximum Packetization Period: 30
Supported Codec: g729ar8, Maximum Packetization Period: 60
Supported Codec: g729abr8, Maximum Packetization Period: 60
Supported Codec: g729r8, Maximum Packetization Period: 60
Supported Codec: g729br8, Maximum Packetization Period: 60
Supported Codec: rfc2833 dtmf, Maximum Packetization Period: 30
Supported Codec: rfc2833 pass-thru, Maximum Packetization Period: 30
Supported Codec: inband-dtmf to rfc2833 conversion, Maximum Packetization Period: 30
TLS : ENABLED

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aalejo
Level 5
Level 5
In response to Mohammed al Baqari

‎09-18-2016 12:30 PM

Hey Mohammed

I do see those lines (rfc2833) on my sccp IOS  conference bridges. 

Before invoking the conference and when I have the other 2 external users, I don't see MTP. MTP is only invoke when  I press the conference soft key on the  IP Phone. Before, each individual call did not invoke MTP.

In other words when all streams are send to the conference bridge is when MTP gets invoke.

Any ideas?

This is the scenario:

IP Phone 1 --> SIP TRunk --> Line 2 (NO MTP)

IP Phone 1 --> Sip TRunk  --> Line 3 (No MTP)

IP Phone 1 --> IOS Conference

Line 2 --> SIP Trunk ---> IOS Conference (MTP)

Line 3 --> SIP Trunk ----> IOS Conference (MTP)

Alex

0 Helpful

Mohammed al Baqari
Level 11
Level 11
In response to aalejo

‎09-19-2016 04:33 AM

Can you share the output of show sip-ua call during point to point and conference call on the CUBE. I want to see the dmtf-relay used in both cases. 

Also, please share the output of show sccp conn during point to point and conference call.

0 Helpful

aalejo
Level 5
Level 5
In response to Mohammed al Baqari

‎09-22-2016 06:56 AM

XXXXXXXXXXX   PSTN Number

ZZZZZZZZZZZZ   PSTN Number

YYYYYYYYYY Internal Number

CUCM is 172.29.0.116 (internal CUCM Leg on CUBE)


------------------------------------------
Individual call to one of the endpoints (you can see that rtp-nte was negociated - no MTP inserted since endpoint IP is 172.29.64.156)
2 entries because is a Cube

YYYYYYYYYY calls XXXXXXXXXXX


CUBE#show sip-ua call
Total SIP call legs:6, User Agent Client:2, User Agent Server:4
SIP UAC CALL INFO
Options-Ping    ENABLED:NO    ACTIVE:NO
Call 2
SIP Call ID                : 64AD0A9B-7FFD11E6-95C7C5F8-BA0408FE@172.29.5.6
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : XXXXXXXXXXX
   Called URI              : sip:XXXXXXXXXXX@172.31.155.75:5060
   Bit Flags               : 0xC04018 0x90000100 0x0
   CC Call ID              : 5316411
   Source IP Address (Sig ): 172.29.5.6
   Destn SIP Req Addr:Port : [172.31.155.75]:5060
   Destn SIP Resp Addr:Port: [172.31.155.75]:5060
   Destination Name        : 172.31.155.75
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316411
     Stream Type              : voice+dtmf (0)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.6]:23504
     Media Dest IP Addr:Port  : [172.31.155.196]:10326


Options-Ping    ENABLED:NO    ACTIVE:NO
   Number of SIP User Agent Client(UAC) calls: 2

SIP UAS CALL INFO
Call 1
SIP Call ID                : 8da36400-7e31d951-1780e2-74001dac@172.29.0.116
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : XXXXXXXXXXX
   Called URI              : sip:XXXXXXXXXXX@172.29.5.22:5060
   Bit Flags               : 0xC0401E 0x10000100 0x80004
   CC Call ID              : 5316410
   Source IP Address (Sig ): 172.29.5.22
   Destn SIP Req Addr:Port : [172.29.0.116]:5060
   Destn SIP Resp Addr:Port: [172.29.0.116]:5060
   Destination Name        : 172.29.0.116
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316410
     Stream Type              : voice+dtmf (1)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.22]:23230
     Media Dest IP Addr:Port  : [172.29.64.156]:59216

CUBE#


------------------------------------------
Individual call to the other endpoints ( you can see that rtp-nte was negociated - no MTP inserted  - no MTP inserted since endpoint IP is 172.29.64.156)
2 entries because is a Cube

 YYYYYYYYYY calls ZZZZZZZZZZZ
CUCM is 172.29.0.116


CUBE#show sip-ua call
Total SIP call legs:8, User Agent Client:3, User Agent Server:5
SIP UAC CALL INFO


Options-Ping    ENABLED:NO    ACTIVE:NO
Call 3
SIP Call ID                : 892FF118-7FFD11E6-95DAC5F8-BA0408FE@172.29.5.6
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : ZZZZZZZZZZZ
   Called URI              : sip:ZZZZZZZZZZZ@172.31.155.75:5060
   Bit Flags               : 0xC04018 0x90000100 0x0
   CC Call ID              : 5316426
   Source IP Address (Sig ): 172.29.5.6
   Destn SIP Req Addr:Port : [172.31.155.75]:5060
   Destn SIP Resp Addr:Port: [172.31.155.75]:5060
   Destination Name        : 172.31.155.75
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316426
     Stream Type              : voice+dtmf (0)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.6]:23046
     Media Dest IP Addr:Port  : [172.31.155.196]:10300


Options-Ping    ENABLED:NO    ACTIVE:NO
Call 4
SIP Call ID                : b1ff4080-7e31d98e-1780e7-74001dac@172.29.0.116
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : ZZZZZZZZZZZ
   Called URI              : sip:ZZZZZZZZZZZ@172.29.5.22:5060
   Bit Flags               : 0xC0401E 0x10000100 0x80004
   CC Call ID              : 5316425
   Source IP Address (Sig ): 172.29.5.22
   Destn SIP Req Addr:Port : [172.29.0.116]:5060
   Destn SIP Resp Addr:Port: [172.29.0.116]:5060
   Destination Name        : 172.29.0.116
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316425
     Stream Type              : voice+dtmf (1)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.22]:22842
     Media Dest IP Addr:Port  : [172.29.64.156]:59230


---------------------------

Conference Call (MTP is inserted and MTP IP are 172.29.68.74 and 172.29.68.90)


4 entries because is a Cube

 YYYYYYYYYY calls ZZZZZZZZZZZ
 YYYYYYYYYY calls XXXXXXXXXXX

Then Conference
CUCM is 172.29.0.116


CUBE#show sip-ua call
Total SIP call legs:8, User Agent Client:3, User Agent Server:5
SIP UAC CALL INFO
Call 1

Options-Ping    ENABLED:NO    ACTIVE:NO
Call 2
SIP Call ID                : A0F8CC95-7FFD11E6-95EAC5F8-BA0408FE@172.29.5.6
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : ZZZZZZZZZZZ
   Called URI              : sip:ZZZZZZZZZZZ@172.31.155.75:5060
   Bit Flags               : 0xC04018 0x90000100 0x0
   CC Call ID              : 5316434
   Source IP Address (Sig ): 172.29.5.6
   Destn SIP Req Addr:Port : [172.31.155.75]:5060
   Destn SIP Resp Addr:Port: [172.31.155.75]:5060
   Destination Name        : 172.31.155.75
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316434
     Stream Type              : voice+dtmf (0)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.6]:23418
     Media Dest IP Addr:Port  : [172.31.155.196]:10324


Options-Ping    ENABLED:NO    ACTIVE:NO
Call 3
SIP Call ID                : AEE8E707-7FFD11E6-95F9C5F8-BA0408FE@172.29.5.6
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : XXXXXXXXXX
   Called URI              : sip:XXXXXXXXXX@172.31.155.75:5060
   Bit Flags               : 0xC04018 0x90000100 0x0
   CC Call ID              : 5316445
   Source IP Address (Sig ): 172.29.5.6
   Destn SIP Req Addr:Port : [172.31.155.75]:5060
   Destn SIP Resp Addr:Port: [172.31.155.75]:5060
   Destination Name        : 172.31.155.75
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316445
     Stream Type              : voice+dtmf (0)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.6]:23248
     Media Dest IP Addr:Port  : [172.31.155.196]:10344


Options-Ping    ENABLED:NO    ACTIVE:NO
Call 2
SIP Call ID                : c9d6c480-7e31d9b6-1780eb-74001dac@172.29.0.116
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : ZZZZZZZZZZZ
   Called URI              : sip:ZZZZZZZZZZZ@172.29.5.22:5060
   Bit Flags               : 0xC0401E 0x18000100 0x80004
   CC Call ID              : 5316433
   Source IP Address (Sig ): 172.29.5.22
   Destn SIP Req Addr:Port : [172.29.0.116]:5060
   Destn SIP Resp Addr:Port: [172.29.0.116]:5060
   Destination Name        : 172.29.0.116
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316433
     Stream Type              : voice+dtmf (1)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.22]:23428
     Media Dest IP Addr:Port  : [172.29.68.74]:19026


Options-Ping    ENABLED:NO    ACTIVE:NO
Call 4
SIP Call ID                : d78c4a00-7e31d9cd-1780ee-74001dac@172.29.0.116
   State of the call       : STATE_ACTIVE (7)
   Substate of the call    : SUBSTATE_NONE (0)
   Calling Number          : YYYYYYYYYY
   Called Number           : XXXXXXXXXX
   Called URI              : sip:XXXXXXXXXX@172.29.5.22:5060
   Bit Flags               : 0xC0401E 0x18000100 0x80004
   CC Call ID              : 5316444
   Source IP Address (Sig ): 172.29.5.22
   Destn SIP Req Addr:Port : [172.29.0.116]:5060
   Destn SIP Resp Addr:Port: [172.29.0.116]:5060
   Destination Name        : 172.29.0.116
   Number of Media Streams : 1
   Number of Active Streams: 1
   RTP Fork Object         : 0x0
   Media Mode              : flow-through
   Media Stream 1
     State of the stream      : STREAM_ACTIVE
     Stream Call ID           : 5316444
     Stream Type              : voice+dtmf (1)
     Stream Media Addr Type   : 1
     Negotiated Codec         : g711ulaw (160 bytes)
     Codec Payload Type       : 0
     Negotiated Dtmf-relay    : rtp-nte
     Dtmf-relay Payload Type  : 101
     QoS ID                   : -1
     Local QoS Strength       : BestEffort
     Negotiated QoS Strength  : BestEffort
     Negotiated QoS Direction : None
     Local QoS Status         : None
     Media Source IP Addr:Port: [172.29.5.22]:23432
     Media Dest IP Addr:Port  : [172.29.68.90]:19146

--------------------------

On The Conference Server when conference is in progress
You can see MTP 172.29.68.90  and 172.29.68.74 end endpoint 172.29.64.156


Conference-IOS#show sccp connections
sess_id    conn_id      stype mode     codec   sport rport ripaddr conn_id_tx

117484557  117716893    conf  sendrecv g711u   16574 59236 172.29.64.156          
117484557  117716890    conf  sendrecv g711u   16572 16644 172.29.68.90          
117484557  117716887    conf  sendrecv g711u   16570 18070 172.29.68.74         

Total number of active session(s) 1, and connection(s) 3

Conference-IOS#

0 Helpful

aalejo
Level 5
Level 5

‎09-26-2016 11:14 AM

Found the answer with TAC: Conference bridge does not support RFC2833 (even though it says otherwise).  Then, if a conference is invoke and any end point support only rfc2833, MTP is invoke on that endpoint.

-Alex

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