46.5. Connecting Abilis and a SIP proxy
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46.5. Connecting Abilis and a SIP proxy

This section contains instructions for a correct set-up of Abilis CPX and SIP proxy interconnection.

46.5.1. Activation of the CTISIP resource

For the activation of the CTISIP resource refer to Section 46.1.1, “Activating the CTISIP resource”.

The basic parameters to configure are:

  • ACT: to activate the resource.

  • sesnum: to define the amount of simultaneous connections.

  • SRCADD: source IP address for outgoing connections [R-ID: the source IP address of the outgoing datagrams will be set to the current RouterID value; OUT-IP: the source IP address of the outgoing datagrams will be set on the base of the output IP interface; 1-126.x.x.x, 128-223.x.x.x: the source IP address of the outgoing datagrams will be set to the selected value; Ip-nnn: use the current IPADD of the specified IP resource].

    [Tip]Tip

    If Abilis has only one IP resource (and only one IP address) , you can use the default value; otherwise if Abilis has more IP resoures and more IP addresses the suggested configuration is OUT-IP.

  • DOMAIN: if Abilis has clients in the public side you can also specify a FQDN.

46.5.2. Example: Abilis and a proxy registered in Abilis domain

In this case the proxy is a “normal” user like a soft phone but the SIP-TYPE is LOCAL-PEER.

46.5.3. Example: Proxy and Abilis registered in Proxy remote domain

In the figure there are the following elements:

  • Abilis is an user of SIP proxy domain “voip.it”;

  • “voip.it” is static IP address: 88.88.88.88;

  • Abilis has a static IP address;

  • Abilis has only one SIP user.

  • Abilis user is “voipclient” with password “swordfish”.

  • SIP proxy provides advanced services like IVR and voice mail, let's say that 10 sessions are needed.

Now you have to create a SIP user representing the user that is client of voip.it SIP proxy:

[14:49:07] ABILIS_CPX:a user:voipclient pwd:swordfish sip:yes

COMMAND EXECUTED

[14:49:07] ABILIS_CPX:s user:voipclient sip-type:server sip-domain:voip.it

COMMAND EXECUTED

[14:49:07] ABILIS_CPX:s user:voipclient sip-host:88.88.88.88

COMMAND EXECUTED

[14:49:07] ABILIS_CPX:s user:voipclient sip-maxses-bid:10 sip-number:*

COMMAND EXECUTED

[14:49:07] ABILIS_CPX:s user:voipclient sip-rem-reg:yes sip-rem-user:voipclient sip-rem-pass:swordfish

COMMAND EXECUTED

You can show the result in this way:

[14:49:07] ABILIS_CPX:d user:voipclient

- Not Saved (SAVE CONF) -------------------------------------------------------
Parameter:        | Value:
------------------+------------------------------------------------------------
USER:               voipclient
ALIAS:              voipclient
ID:                 9    <Read Only>
PWD:                ***
ACT:                YES
GROUP:
CTIP:               #
CLUS:               #
OPC-ROLE:           USER
OPC-VIEW:           *
OPC-MONITOR:        NONE
SIP:                YES
SIP-TYPE:           SERVER
SIP-DOMAIN:         voip.it
SIP-HOST:           088.088.088.088
SIP-TCP-PORT:       5060
SIP-UDP-PORT:       5060
SIP-SRCADD:         SYS
SIP-PROT-IN:        TCP,UDP
SIP-PROT-OUT:       UDP
SIP-IP-PERMIT:      *
SIP-MAXSES-BID:     10
SIP-MAXSES-IN:      0
SIP-MAXSES-OUT:     0
SIP-NUMBER:         *
SIP-CG-NUM:         AUTO
SIP-FWD-CG-NUM:     CALLER
SIP-CTIP-TYPE:      SYS
SIP-RG-IN:          SYS
SIP-ROUTE-BY-SD:    NO
SIP-PROVIDE-SG:     NO
SIP-CLIP-RULE:      SYS
SIP-BUSY-NOCHAN:    NO
SIP-LCS-GROUP:      NONE
SIP-CPO-RTP:        SYS
SIP-CPO-SIGNALLING: SYS
SIP-SS:             NO
SIP-SS-PICKUP:      NO
SIP-SS-PRES-CG:     YES
SIP-SS-CF-DND:      YES
SIP-AUTH:           SYS
SIP-CHAN-FREQ:      SYS
SIP-REMOTE-NAT:     NO
SIP-LOCAL-NAT:      NO
SIP-EXTERNAL-IP:    SYS
SIP-KEEPALIVE:      ENABLED
SIP-DTMF-MODE:      SYS
SIP-DISC-AUDIO:     SYS
SIP-BC-TRANSP:      UDI
SIP-T38:            SYS
SIP-T38-G711:       SYS
SIP-T38-PACKING:    SYS
SIP-T38-REDUND:     SYS
SIP-T38-REDUND-PCK: SYS
SIP-UA:             SYS
SIP-UA-PERMIT:      *
SIP-REM-USER:       voipclient
SIP-REM-PASS:       *********
SIP-REM-AUTH:       SYS
SIP-REM-REG:        YES
-------------------------------------------------------------------------------

The CTISIP table, used to route calls toward SIP users, gets automatically populated with a unique route because you set SIP-NUMBER:*.

[14:49:07] ABILIS_CPX:d ctisip

Total:1         Connected:1         Static:0
NUMx:                  USERNAME:                         P:
----------------------------------------------------------
*                     voipclient                        C

Abilis and the Sip Proxy interconnection is now correctly configured.

[Note]Note

REMOTE-PEER handling is similar to SERVER but it allows calling/called number to pass unchanged.

46.5.4. CTI Routings configuration

Some routings in the CTIR table must be added in order to route the calls to and from the CTISIP resource.

46.5.4.1. Any coder, transcoding disallowed

Purpose of configuration: calls arriving from ISDN/POTS/GSM/CLUSTER are routed to SIP users, and calls arriving from SIP users are first sent to cluster test; in case of failure (NEXT:LIMITED) it is attempted on ISDN/POTS/GSM group G1.

In this situation any coder with maximal speed 6400 (the default for SP parameter) is allowed, but transcoding is disallowed. This means that the same coder must be used by the SIP proxy and Abilis.

[18:05:14] ABILIS_CPX:a ctir pr:0 type:vtos poi:* cdi:*

COMMAND EXECUTED

[18:05:18] ABILIS_CPX:a ctir pr:1 type:ctos sr:* cdi:*

COMMAND EXECUTED

[18:05:30] ABILIS_CPX:a ctir pr:2 type:stoc ds:test cdi:* next:limited

COMMAND EXECUTED

[18:05:38] ABILIS_CPX:a ctir pr:3 type:stov poo:g1 cdi:*

COMMAND EXECUTED

[18:05:51] ABILIS_CPX:d ctir

- Not Saved (SAVE CONF), Not Refreshed (INIT) ---------------------------------
Last change: 28/11/2010 10:36:34 CET

---+-----+-----------------+---------+--------------------+--------------------
PR |[DESCR]
   |TYPE |POI/SR   [SR]    |POO/DS   |CDI                 |CDO
ACT|NEXT       |LAST       |EEC |T301|CGI                 |CGO
EDT|SP   |SC   |DJ   |MJ   |FMDJ|FMMJ|SDI                 |SDO
   |SPOUT|SCOUT|DJOUT|MJOUT|LCS |LCST|SGI                 |SGO
   |                                 |RGI                 |RGO
   |FMRLY|FAXSP|MODSP|FMLVL|ECM |UDT |IG  |OG  |SG        |DL  |DH
   |CODERS
   |CODERSOUT
   |TI1 .. TI5
-------------------------------------------------------------------------------
0   VtoS  *                 CtiSip    *                    *
-------------------------------------------------------------------------------
1   CtoS  *                 CtiSip    *                    *
-------------------------------------------------------------------------------
2   StoC  CtiSip            test      *                    *
    LIMITED     ANY         NO   Dft  *                    *
-------------------------------------------------------------------------------
3   StoV  CtiSip            G1        *                    *
-------------------------------------------------------------------------------
[Tip]Tip

To allow G.729A you have to set SP:8000 in every routing.

46.5.4.2. Only G.711 on SIP proxy, any coder on Cluster, transcoding allowed

Purpose of example: calls arriving from ISDN/POTS/GSM/CLUSTER are routed to SIP users, and calls arriving from SIP users are first sent to cluster test; in case of failure (NEXT:LIMITED) it is attempted on ISDN/POTS/GSM group G1.

In this situation only G.711 A-law or u-law can be used by SIP proxy and Abilis. Since transcoding is enabled by CODERSOUT <> * the StoC and CtoS routings will negotiate for the “C” side any coder with maximum speed up 6400 bps.

[18:12:28] ABILIS_CPX:a ctir pr:0 type:vtos poi:* cdi:* sp:64000

COMMAND EXECUTED

[18:12:37] ABILIS_CPX:a ctir pr:1 type:ctos sr:* cdi:* spout:64000 codersout:G.711

COMMAND EXECUTED

[18:12:45] ABILIS_CPX:a ctir pr:2 type:stoc ds:test cdi:* next:limited sp:64000 coders:g.711 spout:6400 codersout:*,sys

COMMAND EXECUTED

[18:12:53] ABILIS_CPX:a ctir pr:3 type:stov poo:g1 cdi:* sp:64000

COMMAND EXECUTED

[18:13:00] ABILIS_CPX:d ctir

- Not Saved (SAVE CONF), Not Refreshed (INIT) ---------------------------------
Last change: 28/11/2010 10:38:02 CET

---+-----+-----------------+---------+--------------------+--------------------
PR |[DESCR]
   |TYPE |POI/SR   [SR]    |POO/DS   |CDI                 |CDO
ACT|NEXT       |LAST       |EEC |T301|CGI                 |CGO
EDT|SP   |SC   |DJ   |MJ   |FMDJ|FMMJ|SDI                 |SDO
   |SPOUT|SCOUT|DJOUT|MJOUT|LCS |LCST|SGI                 |SGO
   |                                 |RGI                 |RGO
   |FMRLY|FAXSP|MODSP|FMLVL|ECM |UDT |IG  |OG  |SG        |DL  |DH
   |CODERS
   |CODERSOUT
   |TI1 .. TI5
-------------------------------------------------------------------------------
0   VtoS  *                 CtiSip    *                    *
    NO          ANY         NO   Dft  *                    *
    64000 Sys   Sys   Sys   Sys  Sys  *                    *
-------------------------------------------------------------------------------
1   CtoS  *                 CtiSip    *                    *
    NO          ANY         NO   Dft  *                    *
    6400  Sys   *     *     Sys  Sys  *                    *
    64000 *     *     *     NO   Sys  *                    *
                                      *                    *
    Sys   AUTO  AUTO  Sys   Sys  NO
    *
    G.711
-------------------------------------------------------------------------------
2   StoC  CtiSip            Clus1     *                    *
    LIMITED     ANY         NO   Dft  *                    *
    64000 Sys   Sys   Sys   Sys  Sys  *                    *
    6400  *     *     *     NO   Sys  *                    *
                                      *                    *
    Sys   AUTO  AUTO  Sys   Sys  NO
    G.711
    *,Sys
-------------------------------------------------------------------------------
3   StoV  CtiSip            G1        *                    *
    NO          ANY         NO   Dft  *                    *
    64000 Sys   Sys   Sys   Sys  Sys  *                    *
-------------------------------------------------------------------------------
[Tip]Tip

To allow G.729A you have to set SP:8000 in CtoS PR:1 and SPOUT:8000 in StoC PR:2.

46.5.4.2.1. Transcoding optimisation

When the Abilis-SIP proxy interconnection occurs via local LAN, (i.e. with high speed, minimal delays, minimal jitter), optimising the transcoding can be done so that the SIP proxy side uses minimal jitter, minimal delays.

This is obtained by properly setting DJ, MJ, DJOUT, MJOUT.

[18:15:17] ABILIS_CPX:s ctir pr:1 djout:0 mjout:80

COMMAND EXECUTED

[18:15:29] ABILIS_CPX:s ctir pr:2 dj:0 mj:80 djout:sys mjout:sys

COMMAND EXECUTED
[Tip]Tip

DJ and MJ in pr:1 as well as DJOUT and MJOUT in pr:2 may assume other values appropriate for the WAN link or specifically required by calls matching the routing.

46.5.4.2.2. Fax

When transcoding takes place in StoC and CtoS, with G.711 toward the SIP proxy, something interesting happens: on the WAN FAX relay can be used! Abilis can exchange FAX with following characteristics:

  • use G.711, 64 kbps plus IP overhead on the Abilis-SIP proxy interconnection;

  • use G3 Fax relay, 2400/4800/9600/14400 kbps plus IP overhead on the WAN link.

Set FMRELAY:NO in the desired routing to disable fax relay:

[18:18:2] ABILIS_CPX:s ctir pr:0 fmrelay:no

COMMAND EXECUTED

[18:18:35] ABILIS_CPX:s ctir pr:1 fmrelay:no

COMMAND EXECUTED

[18:18:29] ABILIS_CPX:s ctir pr:2 fmrelay:no

COMMAND EXECUTED

[18:15:29] ABILIS_CPX:s ctir pr:3 fmrelay:no

COMMAND EXECUTED
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