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H.110 Streams
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H.110 Bus
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Streams 0..31, timeslots 0..127 (Streams clocked at 8 MHz)
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Figure 28. AG 4000C Switch Model
DigitalMode keyword is set in the AG configuration file (refer to Chapter 3).
DigitalMode=CAS (its default setting), information is routed to accommodate a T1 channel associated signaling configuration, where:
- Trunk 1 - stream 0 and stream 1- Trunk 2 - stream 4 and stream 5
- Trunk 3 - stream 8 and stream 9
- Trunk 4 - stream 12 and stream 13
- Trunk 1 - stream 2 and stream 3- Trunk 2 - stream 6 and stream 7
- Trunk 3 - stream 10 and stream 11
- Trunk 4 - stream 14 and stream 15
Figure 29. Connecting T1 Timeslots (CAS Mode)
DigitalMode=PRI, signaling information is routed to accommodate the T1 ISDN common channel signaling configuration, where:
Figure 30. Connecting T1 Timeslots (PRI Mode)
DigitalMode is set to RAW, information is routed to accommodate a configuration where no D channel is present on the T1 trunk (refer to Section 5.4.1, T1 Framing):
Figure 31. Connecting T1 Timeslots (RAW Mode)
DigitalMode only affects how signaling information is routed. Regardless of the DigitalMode setting, the AG-E1 routes the voice information as follows:
Figure 32. Connecting E1 B Channels to Timeslots
DigitalMode=CAS (the default setting), signaling information is routed to accommodate an E1 channel associated signaling configuration, where E1 channel 16 carries signaling information for all other channels. The signaling information is broken out and placed on the corresponding signaling stream for that trunk. The signaling information is in the following streams:
Figure 33. Breaking Out Signaling Information From E1 Stream 16 (CAS Mode)
DigitalMode=PRI, signaling information is routed differently to accommodate an ISDN common channel signaling configuration, where CCS signaling packets are transmitted in channel 16 instead of CAS bits. All signaling information from channel 16 is placed directly into timeslot 0:
EnableMVIP=YES, switch connections must be made to connect these streams to the HDLC controllers, which processes the D channel information from each frame.
Figure 34. Routing E1 Stream 16 Data To HDLC Controller (PRI Mode)
DigitalMode is set to RAW:
- Trunk 1 - stream 0 and stream 1- Trunk 2 - stream 4 and stream 5
- Trunk 3 - stream 8 and stream 9
Figure 35. Connecting E1 Timeslots (RAW Mode)
EnableMVIP=NO). Default connections are made on AG 4000C boards to connect the voice and signaling information to DSP resources. The exact settings depend upon the setting of DigitalMode, as shown in this table:
EnableMVIP=YES).
#define NMS_FRAMER_CONFIG 0x80000001
#define MVIP95_T1_TRUNK_DEVICE 0x00000000
#define MVIP95_E1_TRUNK_DEVICE 0x00000001
struct nms_config_framer_parms
{
DWORD size; /* size of the structure in bytes */
DWORD trunk; /* specifies the 0 based trunk number */
DWORD frame_type; /* specifies the framing: DT_D4 0 */
/* DT_ESF 1 */
/* DT_CEPT 2 */
DWORD line_code; /* specifies line code: DT_AMI 0 */
/* DT_B8ZS 1 */
/* DT_AMI_ZCS 2 */
DWORD debounce; /* specifies whether the device should */
/* perform 6-9 ms debouncing of the A and */
/* B signaling bits. A value of 1 */
/* enables debouncing. */
}
#define NMS_CHANNEL_CONFIG 0x80000002
#define MVIP95_T1_TRUNK_DEVICE 0x00000000
#define MVIP95_E1_TRUNK_DEVICE 0x00000001
struct nms_config_channel_parms
{
DWORD size; /* size of the structure in bytes */
DWORD trunk; /* specifies the zero based trunk number */
DWORD channel; /* specifies the zero based channel number */
DWORD invert; /* 1 = invert signal; 0 = do not invert */
WORD loopback; /* 1 = loopback the channel; 0 = do not */
/* loopback */
DWORD robbedbit; /* 1 = robbed bit signaling used; 0 clear
/* channel signaling is used */
}
#define NMS_ISDN_HDLC_DEVICE 0x80000001 #define NMS_TASK_PROCESSOR_DEVICE 0x80000002 #define NMS_NULL_DEVICE 0xFFFFFFFF #define MVIP95_T1_TRUNK_DEVICE 0x00000000 #define MVIP95_E1_TRUNK_DEVICE 0x00000001
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