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1000 Media Gateway Series Serial CPID Conﬁguration and Timing Application Note

MD110

Figure 5 shows the DMG1000 serial protocol conﬁgura-

tion page set to MD110 mode.

This is a representative MD110 packet (CPID) for a call

from 9876543, no answer redirected (code 83) by

1234567 to V channel 01 (similar to an LTN).

2831234567987654301\r\n

The V channel from the MD110 packet is matched with

the logical extension number conﬁgured on the serial

protocol page (see Figure 3) to determine which

DMG1000 port should be associated with the CPID

information. This CPID information is retained for Serial

CPID Expiration (msecs) (see Conﬁguration), waiting for

an incoming call on that port. When the call arrives, the

saved CPID information is placed in either the

from/diversion headers of an INVITE for SIP or the

calling party/H.450 diversion PDU ﬁelds of an H.323

SETUP.

Note that the CPID length, voice mail port length, and

system number (see Figure 5) must match the correspon-

ding MD110 conﬁguration in the PBX in order for the

DMG1000 to properly parse these packets.

Figure 5. DMG1000 Serial Protocol Conﬁguration Page Set to MD110 Mode

9086-02_DMG1000_CPDI_Config_an.qxd 6/13/07 2:04 PM Page 9

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